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Complete your new drive system: the CDN S250 crankset from Gates
The Gates Carbon Drive Belt Drive System is a unique high-performance bicycle drivetrain that offers smooth functionality and low maintenance. Precision crankset components for Gates Carbon Drive serve as cost-effective plug-in solutions. It is a complete system that simplifies the installation of the drivetrain and ensures high performance. Gates cranksets feature forged alloy cranks mounted on lightweight sprockets.
Guidelines for replacing E-bike components:
Before you replace components on your E-bike, please read through the guidelines for component replacement for CE-marked E-bikes/pedelecs with pedal assistance.
Belt sprocket attachment: 130 mm bolt circle diameter, 5-arm
Crankarm Material: aluminium
Belt drive sprocket material: Synthetic
Gradation: 46 tooth, 50 tooth, 55 tooth
Crankarm Length: 170.0 mm, 175.0 mm
Belt line: depends on the gear hub
Compatible BSA Shell Width: 68 mm
Recommended Bottom Bracket: Square JIS (e.g. Shimano BB-UN55)
Belt (rec.): CDN belt (tooth pitch 11 mm)
- not approved for MTB or trekking (increased wear)
- not approved for mid-drives
- CDN level: economical CenterTrack version
- suited for city and asphalt roads
- middle guide groove (CenterTrack)
- crank with mounted CDN sprocket: saves time during setup
- generates the required belt line
- concentricity minimizes changes in belt tension
- with belt protection ring made of aluminium, mitigating damage
- black anodised crank arms
Gates Carbon Drive System
Clean, smooth and robust - these are the main advantages of the Gates Carbon Drive System. Developed by Gates Corporation, a global leader in belt drive technology, this system encapsulates a unique drivetrain with high mileage capability. Whether you are an urban commuter, mountain biker, e-bike user or recreational rider, Gates Carbon Drive has a solution to fit your needs. Liberate yourself from oily, rusty chains and join the Gates Carbon Drive Revolution.
Clean: No lubricant means no accumulation of grease and dirt.
Smooth and silent operation: no metal-to-metal contact of the chains.
Light: The whole system weighs less than a standard bicycle chain.
No elongation: Belt does not need to be re-tensioned or replaced.
Self-cleaning: CenterTrack and MudPort profiles are specially designed to repel mud, dirt, snow or other contaminants.
Long service life: Tests have shown that CDX Carbon Drive belts last twice as long as bicycle chains.
Consistent efficiency: The drive boasts a long service life compared to that of a conventional chain, where efficiency is significantly reduced by wear or dirt.
Installing a Gates Carbon Drive Belt Drive requires a specially-made frame, therefore we strongly advise against using one to modify a conventional framework.
Manufacturer Part Numbers:
170.0 mm 46 tooth: FC250 170 BKC465 CDN000 GDBK
175.0 mm 46 tooth: FC250 175 BKC465 CDN000 GDBK
170.0 mm 50 tooth: FC250 170 BKC505 CDN000 GDBK
175.0 mm 50 tooth: FC250 175 BKC505 CDN000 GDBK
170.0 mm 55 tooth: FC250 170 BKC555 CDN000 GDBK
175.0 mm 55 tooth: FC250 175 BKC555 CDN000 GDBK
- 1 x Gates S250 right crankarm
- 1 x Gates S250 left crankarm
- 1 x Gates pre-assembled CDN belt drive sprocket (46, 50 or 55-tooth)
- 1 x Gates bash ring
- 2 x mounting bolts