Hammerhead Karoo Bike Computer (v.3) Derailleur Parts a CO2 — securely under

a CO2 — securely under the saddle without bouncing or shifting on rough roads

5L earns its place on the bike

Enhanced chain retention is achieved through an extended inner plate design that firmly holds cassette and chainring teeth

The BBT-4 is compatible with a wide range of threaded bottom bracket standards

frequent sealant top-offs

Hammerhead Karoo Bike Computer (v.3) Derailleur Parts a CO2 — securely underWhat Makes the Hammerhead Karoo 3 the Best Cycling Computer? The Hammerhead Karoo 3 sets a new benchmark for GPS cycling computers with its industry leading 3. 2 inch color touchscreen and precision GPS built for accuracy in any terrain. Its custom OS is powerful enough to handle real time rerouting on the fly, and the built in Climber tool delivers a predictive elevation profile of every upcoming climb so you can pace your effort before the road tips