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Material: 7075-T6 Aluminium
Finish: Hard Anodised
Chain Size: 415
Tooth Counts – Regular Wheel: 36T, 37T, 38T
Tooth Counts – Big Wheel: 41T, 42T, 43T
Colours: Blue, Green, Gold, Red, Silver, Purple
Fitment: Cobra CX50 JR / SR / FWE
Installation: Direct bolt-on, no modification required
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ART - Racing Parts rear sprockets for the Cobra CX50 JR, SR and FWE, cut for
the narrower 415 chain. Same machining, same hard-anodized
finish and same tooth range as our 420 sprockets — the tooth profile is
machined for 415 roller width instead.
Each sprocket is CNC-machined from high-strength aluminum and hard anodized in
your choice of color. The anodizing hardens the surface against wear and keeps
the color through a season of racing. Drilled and machined to Cobra factory
dimensions for a direct bolt-on fit, no modification required.
Which chain do you have? 415 and 420 share the same 1/2 inch
pitch, so they look nearly identical at a glance and the tooth spacing is the
same. The difference is roller width — 415 is 1/2" x 3/16", 420 is 1/2" x
1/4". Running a 415 chain on a 420 sprocket, or the reverse, causes uneven
tooth loading and rapid wear. The chain sidewall is stamped with its size;
check it before ordering. Our 420 version is
here.
Tooth count is how you tune gear ratio on a CX50. Going up on teeth builds
acceleration and corner drive; going down builds top speed. Match it to the
track rather than leaving one sprocket on all season.
Key Specifications:
Made by ART - Racing Parts and shipped worldwide from Europe. DHL to the US
typically takes 3-5 business days.
| Nr. of tooths | 42, 43, 36, 37, 38, 41 |
|---|---|
| Bike make | Cobra Moto |
| ART Parts Color | Silver, Blue, Green, Red, Gold, Purple, Black |
We ship worldwide every day via DHL. Delivery within the EU is typically 2–3 business days.
We ship to every country DHL serves. Orders shipped to EU destinations qualify for free DHL shipping once the cart subtotal reaches €150. Orders shipped outside the EU are charged live DHL rates, calculated automatically at checkout.
You have 30 days from delivery to return any item in original condition. Full policy →
Art of Racing designs and manufactures its own line of CNC-machined motocross components under the ART Racing Parts label. The manufacturing operation is backed by ALFA TEH, a precision CNC company with production experience in aerospace and demanding industrial sectors. Every ART Racing Parts component is designed, machined, and finished in Europe under one roof.
The first prototypes were developed in 2019 by a professional racer and technician working directly with the engineering team. Each design was tested in competition, refined through successive iterations, and not released until it performed in real racing conditions. ART Racing Parts components have contributed to race wins and championship results across European junior motocross competition.
The current product range includes CNC-machined anodised aluminium rear sprockets for Cobra CX50 and CX65, available in multiple tooth counts for gear ratio tuning and multiple anodised colour options. Additional components including triple clamps are produced to the same standard. ART Racing Parts are exclusively available through the Art of Racing dealer network.
| Make | Model | Years | Notes |
|---|---|---|---|
| Cobra | CX50 | 2016–2027 |
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