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Box®
Best for
race-focused BMX riders
Race class
Confirm by rider size
Fit checked before shipping · Mechanic support via WhatsApp · Authorized dealer sourcing
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Live Stock
Inventory updated daily. Items in stock ship the next business day.
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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
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
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
Recommended upgrades
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
Did you know that you can mix and match Prime 9? Can't decide between the modern basics of Box Three and the long service life of Box Two? Well, you don't need to! With this pre-configured and pre-tested option, you'll receive a Box Three cassette and chain paired to the durable Box Two derailleur and shifter. INCLUDES Box Two Prime 9 Multi Shift Shifter Box Two Prime 9 X-Wide Rear Derailleur Box Three Prime 9 11-50T Cassette Box Three Prime 9 Chain Box One Shift Cable & Housing Kit Our Box Two tier's mission in life is to deliver performance similar to the Box One but without its exotic (and costly) features. You still get the Tri-Pack (TM) Clutch in our derailleur only it isn't adjustable. The cassette's 11-50T range is equally impressive but we don't cut it out of a single block of steel. The action on the shifter is just as snappy although you don't get the rigid die-cast pull lever. Our Box Three tier delivers many of the same capabilities of its more famous siblings yet it's built upon a simpler platform. Cassettes are accessible at 11-46T and fashioned without spiders. The derailleur exploits our Limited Slip clutch technology without the Tri-pack features. Shift easily with a comparable mechanism, although you'll forgo the hinged clamp and die-cast structure. And lastly, string it all together with a Prime 9 chain but without extravagant coatings. If you're looking to bring your 2/3 by bike into the 21st century, then level up with this group! SUPPORT MATERIAL View Prime 9 Drivetrain Compatibility Manual View Prime 9 E-Bike Comparison Chart How is the Ebike variant different? Why Prime 9?

THIS ITEM
Box Two/Three P9 X-Wide Multi Shift Groupset
COMBINED TOTAL
Rp 14.911.204
Preorder each separately via WhatsApp for bundle deals
Box Two/Three P9 X-Wide Multi Shift Groupset
Rp 2.559.965