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Bosch - e*spec Direct Mount Chainrings

CR4UPA-100

Upgrade your e-bike drivetrain with our Bosch e*spec Direct Mount Chainrings.

Our M3 narrow-wide tooth profile reduces weight without compromising on chain-retention. While the steel version is a direct OEM replacement, the premium aluminum versions provide cleaner aesthetics, lighter weight, and long-lasting performance perfect for when you're ready to upgrade from your original ring. 

Conquer your e-bike trails at a great price—power up your drivetrain now!

Shipping Policy    Free Domestic Shipping at $100.00
Starting at
Regular price
$31.95
Sale price
$31.95

Product Spec

Chainline
Steel: 52mm
Aluminum: 53mm (Boost chainline)
Color
Black
Compatibility
Bosch CX Gen4 Motor
Material
7050 Aluminum
Steel
Mount
QuickConnectTM
Weight
Aluminum:
34T: 123g
36T: 155g
38T: 188g
Steel:
34T: 185g
36T: 210g
38T: 250g

Tech Info

How-to install
Frequently Asked Questions

Guaranteed to be free from
defects in materials or workmanship
for 5 years after original purchase