- Application range: Electric Mountain Bike – Bolt Circle: Direct Mount – Material: Steel – Chain Ring options: 14T, 16T, 18T – Colour: Black – For UK BOSCH Power drives Enhanced durability with 14-tooth steel construction designed specifically for electric-assist mountain bikes, providing long-lasting performance and resistance to high torque loads. Features SRAM's proprietary X-Sync (wide-narrow) tooth profiles for superior chain retention, smooth shifting, and reduced chain drop on mid-drive e-bike systems. Compatible with Gen 2 direct mount systems, supporting 8 to 11-speed drivetrains, making it an ideal upgrade for versatile e-mountain bikes seeking improved gear management. Sleek black styling with round, narrow-wide teeth for optimal chain engagement and minimal maintenance, suitable for aggressive trail riding and all-mountain use. Innovative anti-chain drop ring design enhances riding confidence by securely retaining the chain during rugged mountain biking, combined with high-value engineering for quiet operation and easy servicing. ASIN B01J1BMIO4 Size One Size Color Black Style X-Sync E-MTB steel for Bosch drives. Material Alloy Steel Brand Name SRAM Model Name Sram_710845793608 Model Year 2016 Sport Type Cycling Part Number SRAM-CK2140 Manufacturer SRAM Package Weight 0.02 Kilograms Number of Items 1 Suggested Users unisex Included Components nothing Item Dimensions LxWxH 9.5 x 7.5 x 0.5 inches Item Package Dimensions L x W x H 7.32 x 4.02 x 0.31 inches