Desperate for more range? Contact us for custom options for bikes other then Specialized and Shimano
252 WH – 1.3Kg (50% Range Improvement Over a 504WH)
378 WH – 1.9Kg (75% Range Improvement Over a 504WH)
252WH 77mm Diameter & 180mm Length
378WH 77mm Diameter & 250mm Length
Inquire directly to discuss options and fitment locations for you bike.