

CNC Racing
CNC Racing TSB21 Carbon Fiber Gas Cap Flange (check fitment chart)
Finished
CNC Racing TSB21 Carbon Fiber Gas Cap Flange (check fitment chart)
Glossy Carbon
13980 Maycrest Way
13980 Maycrest Way
103
Richmond BC V6V 3C2
Canada
Choose options
Finished
Finished
CNC Racing TSB21 Carbon Fiber Gas Cap Flange (check fitment chart)
The TSB21 carbon fibre fuel cap flange is the base for building a fuel cap that suits you: choose the carbon fibre finish, then pair it with your preferred closure from three different versions.
It replaces the original flange without modifications and brings the weave of real carbon fibre to the centre of the tank.
100% carbon fibre, autoclave cured
The flange is made from 100% plain weave carbon fibre, cured in an autoclave: the fibres are compacted under controlled pressure and temperature, just like racing components, for a stiff, solid part with a uniform surface. Choose it in a glossy finish, which brings out the depth of the weave, or a matte one, for a more technical, understated look.
Ergal inner cap, built to resist the fuel nozzle
The inner cap is made of Ergal with hard anodizing: a very hard surface layer that resists scratches even after repeated contact with the nozzle when refuelling, so the flange keeps looking like new.
Three closures, three ways to ride
The closures are sold separately, giving you complete freedom to customise both function and colour:
- TSU02 Fast Open: quick-release closure without a lock, for the fastest possible refuelling, for example on track.
- TSU01 Key Lock: keyed closure, for riders who often leave the bike parked and want the tank always secured.
- TSU04 Fast Key: quick-release closure with a dedicated key, combining speed and security.
Why choose it
- A cap built your way: a carbon fibre flange to pair with three different closures.
- Real autoclave-cured carbon fibre: plain weave, racing quality.
- Glossy or matte: choose the finish you prefer.
- Hard-anodized Ergal inner cap: it won't scratch from the fuel nozzle.
- Plug & play: it replaces the original flange with no modifications.
Package contents
1 fuel cap with carbon fibre flange, without closure
Note: the closure is not included and must be chosen separately from Fast Open (TSU02), Key Lock (TSU01) and Fast Key (TSU04).
Specifications
- Product: CNC Racing carbon fibre fuel cap flange
- Flange material: 100% carbon fibre, plain weave, autoclave cured
- Inner cap: Ergal with hard anodizing
- Fitting: plug & play, replaces the original flange with no modifications
- Compatible closures: TSU02 Fast Open, TSU01 Key Lock, TSU04 Fast Key (sold separately)
- Available finishes: Glossy (TSB21K), Matte (TSB21Y)
- Compatibility: models listed in the Compatible Models section
Build the fuel cap that suits you. Choose your finish, pair it with your closure and add the CNC Racing carbon fibre fuel cap flange to your cart.
Returns & Exchanges
If you are not completely satisfied with your purchase, you may return the item within 30 business days of receipt. While we offer a hassle-free return policy, some non-defective items may be subject to a 15% restocking fee.
Returned items must be:
- New and unused
- In original condition
- In the manufacturer’s original packaging
- Include all tags
Returns due to manufacturer defects will be accepted only if the customer provides photographic evidence showing the issue was not caused by misuse.
Non-Returnable Items
- Electrical components
- Special or made-to-order items
- Windscreens
- Bodywork
- Carbon fiber parts
- Closeout items
- Used parts
Customers are responsible for all return shipping costs.
Once your return is received and inspected, refunds will be processed within 24–48 hours to the original payment method (minus shipping fees). Please allow an additional 2–8 business days for the refund to appear on your account.
Before returning any item, please contact us at support@motostarz.ca or call 1-236-481-2222 to obtain a return authorization number. This number must be clearly marked on both the inside and outside of the package.


