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Box®
Box Three Prime 9 12-46T/12-50T E-Bike Cassette
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
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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
The Box Three E-Bike Cassette offers high gears with more teeth to withstand the rigors of modern E-Bike riding. Adding an extra tooth to each of the three highest gears provides increased durability and decreased wear by distributing the load over a larger area! The Box Three E-bike cassette draws from both of its Box One and Box Two siblings to create a sensible all-rounder. All cogs are stamped from steel and subsequently, the larger ones are pinned to steel spiders. The main difference here versus Box Two is the use of additional weight-reducing holes on the cogs. SUPPORT MATERIAL Prime 9 Technology™ View Prime 9 Drivetrain Compatibility Manual How is the Ebike variant different? View Prime 9 E-Bike Comparison Chart Why Prime 9? FAQ Please see page 6 of our guide for notes regarding the 2 HG drivers.
+COMPLETE YOUR SETUP
THIS ITEM
Box Three Prime 9 12-46T/12-50T E-Bike Cassette
COMBINED TOTAL
Rp 13.215.665
Preorder each separately via WhatsApp for bundle deals
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Box Three Prime 9 12-46T/12-50T E-Bike Cassette
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