Drivetrain Options - What Drives You?
You've decided which Co-Motion is right for your kind of riding. Did you know we're also the leader in drivetrain options? These are the drivetrain options for the Tumalo. View the in-depth gearing details below.
Shimano GRX 1 x 12-speed
- Derailleur drive trains are lightweight, smooth operating and very efficient
- Our 12-speed (1 x 12) choices provide easy shifting with incredibly wide gear range
- Single chainring cranks are lighter and no front derailleur = less shifting and less maintenance than double ring setups
- The GRX 10-51t wide cassette offers 510% overall gear range
- Tumalo GRX 1 x 12 kit offers a 18.1" low, 92.8" high gear
Pinion C1.12 (manual shifting) or or C1.12i SmartShift Gearbox / Gates Carbon Drive
- Revolutionary 12spd bicycle transmission from Germany
- Choose the manual-shifting C1.12 or the electroncally-shifting and programmable C1.12i option
- Choose from drop handlebars with TRP Hywire controls or flat handlebars with Pinion shifter and Shimano brakes
- Extremely low maintenance, with entire gearing mechanism sealed inside
- Mounted at the center of the frame for a balanced feel
- Uses a lightweight single speed rear wheel
- Amazing 600% overall gear range
- Gates Carbon Belt Drive for grease-free bliss
- Tumalo Pinion C1.12 gearbox offers a 16.1" low, 97.4" high gear
Gear Inches-
The descriptions above refer to gear inches for comparison purposes. The term refers to the effective equivalent wheel diameter per pedal stroke. For example, if you're pedaling the Tumalo Pinion in first gear, each full pedal stroke will produce the equivalent of one wheel revolution of a 16.1" wheel, while the highest gear will produce the equivalent rotation of a 97.4" wheel.