All images are for reference only. Actual product color & size may vary.
SPEEDCO
Best for
Pro riders
Race class
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
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
Race class
Pro
Rider height
Top tube
Check geometry/spec table before ordering
Wheel size
Material
aluminum
Skill level
intermediate to national-level 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 gate starts, technical straights, and national race pace.
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
The Speedco M2 Disc Brake Mounting Kits are CNC machined out of 6061 aluminum. Each kit includes one disc brake mount, three axle blocks, and two chain-tension screws/nuts. These mounts are compatible with a size 120mm disc rotor, and will not work with a 140mm disc rotor. For optimal braking performance, we always recommend a Shimano XT/XTR hydraulic braking system. There are three kits available which are 10mm, 15mm and 20mm. Please select carefully based on your rear hub's axle configuration.
Frame Reference

| Frame Size | TT | CS min | LR | AF | SA | HT | SPL | BBH | WB | Wheels |
|---|---|---|---|---|---|---|---|---|---|---|
| Pro | 20.5"520.7 mm | 14.75"374.7 mm | 1.5"38.1 mm | 74° | 72° | 4.7"119.4 mm | 9.3"236.2 mm | 11.5"292.1 mm | — | 20" |
✓ Official TT/CS/AF/SA/BBH — jrbicycles.com / usprobikes.com · HT/SPL/WB estimated

THIS ITEM
Speedco M2 Pro Disc Brake Mounting Kit
COMBINED TOTAL
Rp 4.583.010
Preorder each separately via WhatsApp for bundle deals
Speedco M2 Pro Disc Brake Mounting Kit
Rp 1.871.269