5Dev

R Spec Bosch eCranks

The 5Dev R Spec Bosch eCranks bring precision engineering and eMTB performance together for riders who demand more from their electric trail bike. Designed specifically for Bosch motor systems, these cranks deliver the same high-quality ride feel and durability as the standard 5Dev models, but with a shape and stance tuned for eBike power and terrain.

A low-profile crank arm design helps reduce pedal strikes on rocky or technical climbs, keeping momentum smooth and efficient when the trail gets rough. That means fewer hang-ups, more clean lines, and more laps before calling it a day.

At just 440 grams, they strike the perfect balance between strength and lightweight performance—ideal for aggressive riders who expect their components to work as hard as they do.

• Optimized for Bosch eBike systems – engineered fit and performance for seamless power delivery.
• Low-profile design – reduces pedal strikes and improves clearance on technical terrain.
• 440g weight – durable yet lightweight for all-day eMTB adventures.
• Premium 5Dev construction – made for riders who push their eMTBs to the limit.