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SINZ
Sinz Pro Square Tapered BMX Bottom Bracket
Best for
Junior riders
Race class
Junior / Pro
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
Junior / Pro
Rider height
Top tube
Check geometry/spec table before ordering
Wheel size
Material
alloy
Skill level
developing BMX racers
Setup context
Race-ready checks
Crank length
108mm
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 Sinz Square Tapered Bottom Brackets are available in 3 spec levels which are Junior, Pro, and Titanium, with two sizes in each which are 108mm and 113mm. The Junior model features a steel body, alloy cups, and chromoly spindle. The Pro model features a carbon body, hollow chromoly spindle, and alloy cups. The titanium model features a carbon body, titanium spindle, and alloy cups. Of the two sizes, the 113mm is the most common. The 108mm brings the cranks in closer to the frame and is typically used on smaller frames or with cranks that have a lot of “offset” in the arm. Weights: Junior 108mm (w/bolts): 9.15oz Junior 113mm (w/bolts): 9.7oz Pro 108mm (w/bolts): 8.4oz Pro 113mm (w/bolts): 8.65oz Titanium 108mm (w/bolts): 6.55oz Titanium 113mm (w/bolts): 6.65oz
Specifications
- Junior 108mm (w/bolts):
- 9.15oz
- Junior 113mm (w/bolts):
- 9.7oz
- Pro 108mm (w/bolts):
- 8.4oz
- Pro 113mm (w/bolts):
- 8.65oz
- Titanium 108mm (w/bolts):
- 6.55oz
- Titanium 113mm (w/bolts):
- 6.65oz
+COMPLETE YOUR SETUP
THIS ITEM
Sinz Pro Square Tapered BMX Bottom Bracket
COMBINED TOTAL
Rp 2.897.951
Preorder each separately via WhatsApp for bundle deals
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