Product Name: Zero GravityLok
Category: Guitar strap accessory / antineckdive balance system
Primary Customer: Classic rock, metal, shred, extremeshape guitar owners, bass players
Core Value: Stabilizes neckheavy guitars without drilling the instrument
Primary Selling Price: $129–$199 direct, depending on kit level
Hero Kit: Zero GravityLok Stage Kit — $169 direct

 

 2. Product Concept

Zero GravityLok is not just a weight. It is a balancetuning system.

The product consists of:

1. A leather strap tail assembly.
2. A thin stiff steel plate laminated between leather layers.
3. A Dunlop StrapLokcompatible strapend fastener.
4. Rubberized or Plasti Dipcoated steel weight modules.
5. Magnetic alignment to help the modules stack cleanly on the rear strap section.
6. Mechanical safety capture so the weights cannot fall off during performance.

The system allows the guitarist to test and tune the instrument:

 Configuration  Weight Added  Use Case                                     
   :   
Level 1              0.5 lb  SG, Flying V, Explorer, mild neck dive       
Level 2              1.0 lb  Warlock, Firebird, moderate neck dive        
Level 3              1.5 lb  Ironbird, Thunderbird bass, severe neck dive 

The product should be marketed around the phrase:

# Zero GravityLok

 Stabilize the Beast.

# Tunable AntiNeckDive Strap System

 

 3. Why This Product Is Different

Most current neckdive solutions fall into one of four categories:

 Existing Fix             Weakness                                                      
    
Wide suede strap         Adds friction but does not rebalance the guitar               
Strapbutton relocation  Requires drilling or permanent modification                   
Lighter tuners           Expensive, limited effect, not always enough                  
Harness strap            Helps ergonomics but changes the player’s stage look and feel 

Zero GravityLok creates a cleaner middle path:

No drilling. No awkward harness. No ugly DIY weights. No guessing.

The system allows the customer to add or remove weight until the guitar feels right.

 

 4. Target Instruments

Zero GravityLok should specifically target guitars and basses known for neckdive complaints or awkward balance.

 Brand / Style                          NeckDive Risk  Best Kit                Target Player                             
   :     
BC Rich Ironbird                            Very high  1.5 lb Stage / Pro Kit  Metal, thrash, death metal, 80s shred     
BC Rich Warlock                                  High  1.0–1.5 lb Kit          Metal, hard rock, collectors              
BC Rich Warlock Bass                        Very high  1.5–2.0 lb Bass Kit     Metal bassists                            
Gibson SG / Epiphone SG                   Mediumhigh  0.5–1.0 lb Kit          Classic rock, bluesrock, worship, studio 
Gibson / Epiphone Flying V                Mediumhigh  0.5–1.0 lb Kit          Classic rock, metal, stage players        
Gibson / Epiphone Explorer                     Medium  0.5–1.0 lb Kit          Metallicastyle players, rock players     
Gibson Firebird                                Medium  0.5–1.0 lb Kit          Vintage rock, slide, bluesrock           
Gibson / Epiphone Thunderbird Bass               High  1.5 lb Bass Kit         Rock and metal bassists                   
Dean ML / Razorback / V                   Mediumhigh  1.0–1.5 lb Kit          Dimebaginspired metal players            
Jackson Rhoads / King V / Kelly                Medium  0.5–1.0 lb Kit          Shred, metal, gigging players             
ESP/LTD Arrow / EX / Viper                     Medium  0.5–1.0 lb Kit          Modern metal, activepickup players       
Schecter V / Avenger / extendedrange          Medium  0.5–1.0 lb Kit          Metalcore, djent, extendedrange players  
5/6string longscale basses                     High  1.5–2.0 lb Bass Kit     Bassists, metal, fusion                   

 

 5. Recommended Product Architecture

The best production design is a magnetically aligned but mechanically retained system.

This is important. A 1.5 lb weight should not rely on magnet force alone during live performance. Magnets are excellent for fast alignment and clean stacking, but the system should include a safety capture feature.

# Recommended design

Leather Strap Tail Assembly

 3" to 4" wide leather strap tail.
Top leather layer.
Thin internal springsteel or stainlesssteel reinforcing plate.
Bottom suede or garmentleather comfort layer.
Stitched perimeter.
Riveted or Chicagoscrew reinforcement.
Dunlop StrapLokcompatible strapend hole / fastener zone.

Common Back Plate

 Thin ferrous steel plate laminated into the rear strap section.
Allows magnets in the weight modules to align and register.
Spreads load across the strap instead of stressing one leather hole.
Provides stiffness so the weight does not flop.

Weighted Top Modules

 Steel plates, rubberized or Plasti Dipcoated.
Embedded magnets or magnetic alignment pockets.
0.5 lb each or grouped in 0.5 / 1.0 / 1.5 markings.
Black, brass, nickel, or gold visual theme.
Rounded corners and softened edges.
Safety retention via screw, snap, slide tab, or lowprofile strap channel.

# Recommended module shape

For a 0.5 lb steel module:

2.5" × 3.5" × 0.29" steel

Steel weighs about 0.283 lb/in³, so that size lands close to 0.5 lb before coating and hardware.

For a 1.5 lb stack:

Three 0.5 lb modules stacked together
Total thickness before coating: approximately 0.87"
Final thickness with coating/pads: approximately 0.95"–1.05"

That is acceptable for a rear strap location, especially on extremeshape guitars where the benefit is significant.

 

 6. Core Safety Design

The production version should use:

Magnetic alignment + mechanical retention

Recommended retention methods:

 Method                    Description                                                               Best Use             
      
Lowprofile safety screw  One thumb screw or machine screw through stacked modules into back plate  Most secure          
Sliding rail lip          Module slides into a short metal/leather channel                          Premium version      
Snap + magnet             Magnet aligns, snap prevents dropoff                                     Fast user adjustment 
Leather keeper loop       Strap loop captures module stack                                          Simple and lowcost  
Hidden tether             Thin safety cable or webbing tether                                       Extra stage safety   

Best version:

Magnets for alignment, lowprofile mechanical capture for live use.

This should be a major selling point:

“Magnetically aligned. Mechanically secured.”

 

 7. Dunlop StrapLok Alignment Opportunity

The product should not copy Dunlop’s mechanism. The strongest strategy is to supply genuine Dunlop StrapLok hardware in the kit or offer a “Dunlopinstalled” version.

Dunlop describes its StrapLok Dual Design system as the industry standard for over 30 years, with wideflanged strap buttons that can also be used like normal strap buttons. Dunlop’s current Dual Design line includes nickel and black oxide versions at $20.99, brass at $24.14, vintage nickel and black nickel at $26.24, and gold at $31.49. ([Dunlop][1]) Amazon’s Dunlop listing also states that the system uses a 360degree grooveandball design, includes two strap attachments, and is releasetested up to 800 lb. ([Amazon][2])

# Recommended language

Use:

“Designed for use with genuine Dunlop StrapLok hardware.”
“Available with genuine Dunlop StrapLok Dual Design hardware included.”

Avoid unless formally approved:

“Dunlop certified.”
“Official Dunlop partner.”
“Dunlop licensed.”

# Alignment paths

 Path                               Description                                                      Difficulty                       Value 
     :  : 
Buy retail/wholesale Dunlop kits   Include genuine StrapLok hardware in Zero GravityLok kits               Low  High immediate credibility 
Affiliate / reseller relationship  Sell StrapLokequipped kits and route users to Dunlop hardware       Medium                        Good 
Comarketing pitch                 “Zero GravityLok uses genuine Dunlop StrapLok hardware”         Mediumhigh                      Strong 
OEM licensing                      Formal approved Dunlopcompatible kit                                  High         Highest credibility 
Dealer bundle                      Guitar shops sell Zero GravityLok + Dunlop hardware together         Medium       Strong retail pathway 

 

 8. Levy’s Strap Alignment Opportunity

Levy’s is a natural strap partner because the product requires a highquality leather strap architecture. Levy’s describes itself as a longstanding guitarstrap brand founded in 1973, with leather straps positioned around craftsmanship, quality, and musician identity. ([Levy's Leathers][3]) One Levy’s product example is a 2.5" wide garment leather strap, adjustable to 51", with a twoply strap, foam padding, garment leather backing, rivet detail, and diamond quilt stitch pattern. ([Levy's Leathers][4])

# Recommended alignment paths

 Path                                      Description                                                                           Difficulty                     Value 
     :  : 
Use Levy’s straps as premium host straps  Buy finished Levy’s straps and modify/assemble Zero GravityLok strap tail             Lowmedium  Strong brand familiarity 
Custom Levy’s strap tail                  Pitch Levy’s on a reinforced Zero GravityLok reartail variant                       Mediumhigh                 Excellent 
Limitededition bundle                    “Zero GravityLok Premium Strap Edition featuring Levy’s leather strap”               Mediumhigh                    Strong 
Dealer bundle                             Sell Zero GravityLok as an addon for Levy’s strap owners                                 Medium                      Good 
Longterm OEM                             Levy’s manufactures the leather component; Jordan Lutherie supplies balance modules         High     Best scalable version 

# Recommended positioning

Zero GravityLok Stage Strap — powered by premium leather strap architecture and genuine straplock hardware.

Do not claim a formal Levy’s partnership until it exists. Use:

“Compatible with premium leather straps, including Levy’sstyle strap construction.”

Or, if buying and including actual Levy’s straps:

“Built using a genuine Levy’s strap as the host strap.”

 

 9. Plasti Dip / Rubberized Coating Strategy

Plasti Dip is a strong early production coating because it is flexible, grippy, protective, and easy to apply in small batches. Plasti Dip’s FAQ states that a 14.5 oz liquid can covers about 5 sq. ft. at 10 mil thickness, while an 11 oz spray covers about 6 sq. ft. at 5 mil thickness. ([PlastiDip][5]) Plasti Dip also describes the coating as peelable, flexible, protective against moisture, acids, abrasion, corrosion, and slipping, and usable across a wide temperature range. ([Plasti Dip][6])

# Recommended finish hierarchy

 Finish                           Use                          Positioning              
      
Black Plasti Dip                 Prototype / first 100 units  Lowcost, grippy, rugged 
Textured rubberized powder coat  Production standard          Durable, professional    
Clearcoated brushed steel       Premium industrial version   Boutique metal look      
Brass/black trim edition         Highmargin deluxe           Premium visual appeal    
Custom color dip                 Limited editions             Artist/custom market     

# Recommended coating language

“Rubberized protective coating helps protect the strap, reduce rattle, and create a controlled grip surface.”

 

 10. Kit Lineup

 SKU         Product                                Contents                                            Direct Price 
       : 
ZGL05      Zero GravityLok Lite                   Reinforced strap tail + 0.5 lb module                        $89 
ZGL10      Zero GravityLok Stage                  Reinforced strap tail + 1.0 lb module set                   $129 
ZGL15      Zero GravityLok Pro                    Reinforced strap tail + 0.5 / 1.0 / 1.5 tuning set          $169 
ZGL15SL   Zero GravityLok StrapLok Pro           ZGL15 + genuine Dunlop StrapLok hardware                   $199 
ZGL15LV   Zero GravityLok Premium Strap Edition  ZGL15 + premium leather strap + StrapLok hardware          $249 
ZGLBASS    Zero GravityLok Bass                   1.5–2.0 lb heavy kit                                   $219–$279 
ZGLCUSTOM  Zero GravityLok Artist Series          Custom finish, engraving, strap integration            $299–$399 

Best launch product:

# Zero GravityLok StrapLok Pro — $199 direct

Best entry product:

# Zero GravityLok Stage — $129 direct

Best premium product:

# Zero GravityLok Premium Strap Edition — $249 direct

 

 11. Materials and Estimated Unit Cost

# ZGL15 StrapLok Pro Kit — Direct Price $199

 Component                                Estimated Unit Cost 
   : 
3 steel weight plates, 0.5 lb each                    $7–$14 
Steel internal back plate / strap spine             $1.50–$4 
Neodymium magnets / magnetic inserts                   $3–$8 
Mechanical retention hardware                       $1.50–$4 
Leather layers / strap tail material                  $6–$14 
Stitching, rivets, Chicago screws                      $2–$5 
Plasti Dip / rubberized coating                     $1.50–$4 
Neoprene / felt / antirattle pads                     $1–$3 
Genuine Dunlop StrapLok kit                          $21–$32 
Packaging, label, instruction card                     $3–$6 
Assembly labor and QC                                $12–$22 
Estimated COGS                              $60–$116 

Recommended direct price:

$199

Expected gross profit:

$83–$139 per unit

Expected gross margin:

42%–70%, likely around 55% once the process is dialed in.

# ZGL15 Premium Strap Edition — Direct Price $249

 Component                                        Estimated Unit Cost 
   : 
ZGL15 StrapLok Pro base kit                                $60–$116 
Premium leather strap / Levy’sstyle host strap              $25–$60 
Additional assembly/modification labor                        $8–$18 
Premium packaging                                             $5–$10 
Estimated COGS                                      $98–$204 

Recommended direct price:

$249

This edition has stronger brand appeal but needs careful cost control. It becomes very profitable if the strap component can be sourced around $25–$40 wholesale.

 

 12. Equipment and Startup Cost

# Prototype / GarageShop Production

 Equipment                                                          Estimated Cost 
   : 
Drill press                                                             $200–$600 
Metal cutting saw / bandsaw / chop saw                                  $250–$900 
Bench grinder / deburring wheel                                         $100–$300 
Belt sander                                                             $150–$600 
Leather punch set                                                        $30–$100 
Rivet / snap / Chicago screw tools                                       $50–$200 
Heavyduty sewing machine or leather stitching outsource setup          $0–$1,500 
Digital scale                                                             $20–$60 
Calipers                                                                  $20–$80 
Clamps, jigs, fixtures                                                  $100–$400 
Coating rack / drying rack                                               $75–$250 
PPE / ventilation / gloves                                              $100–$300 
Packaging tools / label printer                                         $100–$400 
Prototype Equipment Total                                   $1,195–$5,690 

# SmallBatch Professional Setup

 Equipment / Process                           Estimated Cost 
   : 
Waterjet/CNC blank outsourcing setup     $500–$2,500 initial 
Custom drilling / forming jigs                   $300–$1,200 
Leather die cutting dies                         $300–$1,500 
Batch coating setup                              $500–$2,000 
Industrial sewing machine                      $1,000–$3,500 
Tumbler / vibratory deburring                    $250–$1,000 
Inventory shelving / bins                          $200–$750 
Product photography setup                        $300–$1,500 
Website / Shopify / Reverb / Etsy setup          $300–$2,000 
Initial packaging inventory                      $500–$2,500 
Initial 100unit material inventory           $6,000–$12,000 
SmallBatch Launch Total             $10,150–$30,450 

# Recommended first investment target

$15,000–$20,000 is enough to make a serious first batch, build demos, create photography, test packaging, and launch direct online sales.

 

 13. Manufacturing Process

# Straptail assembly

1. Cut leather top and bottom layers.
2. Cut internal steel spine/back plate.
3. Deburr and radius steel edges.
4. Punch straplock hole and rivet holes.
5. Laminate steel plate between leather layers.
6. Stitch perimeter.
7. Add rivets or Chicago screws.
8. Install or prepare Dunlopcompatible strapend hardware.
9. Inspect flex, stiffness, hole alignment, and finish safety.

# Weight module process

1. Cut steel blanks.
2. Radius corners.
3. Drill magnet pockets / retention holes.
4. Deburr and tumble.
5. Degrease.
6. Apply primer if needed.
7. Apply Plasti Dip or rubberized coating.
8. Cure.
9. Add engraved or printed weight marking: .5 / 1.0 / 1.5.
10. Install magnets or magnetic interface.
11. Add antirattle pads.
12. Test magnetic alignment and mechanical retention.

# Final assembly

1. Pair strap tail and module set.
2. Install StrapLok hardware if kit includes it.
3. Test retention under shake/drop simulation.
4. Weigh final module set.
5. Inspect coating quality.
6. Package with instructions and warnings.

 

 14. Quality and Safety Tests

 Test                  Requirement                                          
    
Static load test      Strap assembly holds at least 5× installed weight    
Shake test            Modules do not detach during aggressive movement     
Drop test             Coating does not chip or expose sharp steel edges    
Finish contact test   No exposed metal contacts guitar finish              
Sweat test            No staining or coating transfer onto strap/clothing  
Magnet security test  Magnets remain bonded after repeated install/removal 
StrapLok fit test     Works with genuine hardware without binding          
Edge test             No sharp edges through leather or coating            

# Magnet caution

Because guitars use magnetic pickups, the weight modules should sit near the rear strap section, away from pickups and strings. Include a simple warning:

Keep magnetic modules away from pickups, strings, credit cards, pacemakers, magnetic media, and small children.

 

 15. Sales Channels

 Channel                         Role                                                
    
JordanLutherie.com              Highest margin, brand authority                     
Zero Gravity Pick landing page  Crosssell with pick product                        
Reverb                          Best guitarspecific marketplace                    
Etsy                            Custom/boutique buyer traffic                       
Amazon                          Scale after product reviews and packaging are ready 
Facebook Marketplace / groups   Fast testing with BC Rich, SG, V, metal communities 
Guitar techs / luthiers         Installation referral channel                       
Boutique guitar stores          Premium credibility                                 
YouTube / TikTok demo videos    Best proofoffunction channel                      
Artist endorsements             Metal credibility and viral lift                    

 

 16. Market Opportunity

The guitar market is large enough to support a focused accessory niche. Fortune Business Insights reports the global electric guitar market at $5.66 billion in 2025, projected to grow to $11.33 billion by 2034, driven by live performance, younger players, online learning, custom models, and guitar use across rock, pop, and metal. ([Fortune Business Insights][7]) The same source lists North America at 37%, Europe at 29%, AsiaPacific at 24%, and the rest of world at 11% of market share, which supports a USAfirst launch with strong international upside. ([Fortune Business Insights][7])

Zero GravityLok is not targeting every guitar owner. It is targeting the installed base of players who already own neckheavy guitars and want a clean solution.

# Practical niche assumptions

 Assumption                                                          Conservative Estimate 
   : 
U.S. neckdive / extremeshape guitar owners reachable online             100,000–300,000 
Global minus USA reachable online                                         150,000–500,000 
Early conversion potential                                     0.5%–3% of reachable niche 
Average selling price                                                           $169–$219 
Weighted average gross profit                                           $80–$115 per unit 

 

 17. Revenue and Profit Forecast

# Base assumptions

 Metric                                                       Estimate 
   : 
Weighted average selling price                                   $189 
Weighted average COGS                                             $82 
Gross profit per unit                                            $107 
Gross margin                                                    56.6% 
Operating profit after ads, fees, support, overhead  $55–$70 per unit 

# USA annual sales

 Scenario                       Units / Year     Revenue  Gross Profit     Operating Profit 
   :  :  :  : 
Proofofmarket                         500     $94,500       $53,500      $27,500–$35,000 
Base DTC                              2,000    $378,000      $214,000    $110,000–$140,000 
Strong niche adoption                 6,000  $1,134,000      $642,000    $330,000–$420,000 
Breakout with dealers/artists        15,000  $2,835,000    $1,605,000  $825,000–$1,050,000 

# Global minus USA annual sales

 Scenario                            Units / Year     Revenue  Gross Profit     Operating Profit 
   :  :  :  : 
Proofofmarket                              300     $56,700       $32,100      $15,000–$21,000 
Base DTC                                   1,500    $283,500      $160,500     $75,000–$105,000 
Strong niche adoption                      5,000    $945,000      $535,000    $250,000–$350,000 
Breakout with distributors/artists        18,000  $3,402,000    $1,926,000  $900,000–$1,260,000 

# Combined annual opportunity

 Scenario               Total Units  Total Revenue  Gross Profit       Operating Profit 
   :  :  :  : 
Proofofmarket                800       $151,200       $85,600        $42,500–$56,000 
Base DTC                     3,500       $661,500      $374,500      $185,000–$245,000 
Strong niche adoption       11,000     $2,079,000    $1,177,000      $580,000–$770,000 
Breakout                    33,000     $6,237,000    $3,531,000  $1,725,000–$2,310,000 

 

 18. Best FirstYear Target

The best realistic target is:

# Year 1 Goal

800–1,500 units sold
$151,000–$284,000 revenue
$85,000–$160,000 gross profit

This is achievable through direct sales, demo videos, guitar forums, Reverb, Etsy, metal guitar groups, BC Rich communities, SG groups, Flying V groups, and artist demos.

# Year 2 Goal

3,500 units sold
$661,500 revenue
$374,500 gross profit

This assumes improved manufacturing, stronger demos, dealer interest, and a better supply chain for straps and StrapLok hardware.

 

 19. Alignment Outreach Plan

# Dunlop pitch

Subject: Zero GravityLok + Dunlop StrapLok Alignment Opportunity

Pitch angle:
Zero GravityLok is a premium antineckdive strapmounted balance system designed around secure straplock performance. The system is a natural fit for genuine Dunlop StrapLok hardware because the customer already needs a secure strap interface when adding adjustable balance mass to the strap tail. Jordan Lutherie would like to explore hardware bundling, reseller purchasing, comarketing, or a compatibility review.

# Levy’s pitch

Subject: Zero GravityLok Premium Strap Edition — Reinforced Strap Tail Opportunity

Pitch angle:
Zero GravityLok requires a highquality leather strap platform with an integrated reinforced reartail section. Levy’s has a longstanding reputation in premium guitar straps, making it a natural alignment candidate for a premium antineckdive strap edition. Jordan Lutherie would like to explore using Levy’s straps as a host platform, developing a custom reinforced reartail strap, or creating a limited premium bundle for neckheavy guitars.

 

 20. Website Sales Copy

# Zero GravityLok

 Stabilize the Beast.

Some guitars were built to look dangerous. Some of them balance that way too.

Zero GravityLok is a tunable antineckdive strap system for guitars and basses that want to pull the neck toward the floor. Designed for instruments like the SG, Flying V, Explorer, Ironbird, Warlock, Thunderbird bass, Dean ML, Jackson Rhoads, and other aggressive stage guitars, Zero GravityLok lets players finetune balance with modular magnetic weight plates.

The reinforced strap tail uses a stiff internal steel plate and a straplockcompatible connection point. Rubberized steel weight modules stack onto the rear strap section for 0.5 lb, 1.0 lb, or 1.5 lb balance tuning. The result is a cleaner playing position, better stage control, and less fighting against the guitar.

Magnetically aligned. Mechanically secured. Built for guitars that refuse to behave.

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