E*spec Direct Mount Chairing 34T Bosch e*thirteen
CR4UPA-100
e*thirteen e*spec Aluminum Direct Mount Chairing 34T Bosch CX Gen4 …
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!
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
Product Fitment
| Make | Model | Year | Capacity |
|---|---|---|---|
| No fitment information available | |||