All images are for reference only. Actual product color & size may vary.
BRG Store
ONYX ULTRA SS COG
Best for
race-focused BMX riders
Race class
Confirm by rider size
Fit checked before shipping · Mechanic support via WhatsApp · Authorized dealer sourcing
100% Secure Transaction
Live Stock
Inventory updated daily. Items in stock ship the next business day.
Fast Delivery
We use trusted couriers to make sure your order arrives safely and on time.
Secure Payments
100% secure transaction. We never share your information with third parties.
Satisfaction Guarantee
Every item is checked before shipment. Return within 10 business days if unsatisfied.
Preorder terms
Clear timing before you commit.
09 Sep 2026 target
Full payment or WhatsApp-assisted
Cancelable before supplier confirmation
~14 business days after order
Fit & geometry
Will this fit me?
Race class
Confirm by rider size
Rider height
Top tube
Check geometry/spec table before ordering
Wheel size
Material
Skill level
developing BMX racers
Setup context
Race-ready checks
Crank length
Gear ratio
Confirm chainring and cog setup
Brake type
Confirm brake standard
Pedal setup
Confirm included pedal/clipless preference
Track recommendation
Best for club racing and skill progression.
Next step
Still unsure?
Recommended upgrades
Complete the race setup
Gearing
Confirm chainring/cog ratio for your local track before checkout.
Contact points
Review pedals, grips, and saddle setup for gate-start confidence.
Protection
Pair the build with race helmet, gloves, and body protection.
Product info
About This Product
Heat treated stainless steel cog. Only for cassette ONYX Ultra SS . From 14 to 18 teeth. All ONYX items on BRGstore.com are custom orders, made to your specifications when placed. Please choose your options carefully and double check your build as all ONYX items are a final sale and are non returnable items. All USA customers, ONYX orders will ship direct to you from ONYX, once completed. If you are ordering and shipping outside of the USA, the hubs will ship to BRG in California first and then will be sent to you with the rest of your order. Please note, ALL ONYX orders, no matter the color/Spec are custom made to order and ONYX currently are on a production delay of up to 5-7 weeks to complete.
+COMPLETE YOUR SETUP
THIS ITEM
ONYX ULTRA SS COG
COMBINED TOTAL
Rp 23.673.925
Preorder each separately via WhatsApp for bundle deals
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ONYX ULTRA SS COG
Rp 935.728