Surly Track Cog 1/8'' X 15t Silver Routing-Internal Chainline/Hub Compatibility 135/142 MTB Hubs B-FA2474 Size:140Mm Carbon brake and shift CheckoutTitle=RockShox Super Deluxe Reservoir Assy

Surly Track Cog 1 8'' X 15t Silver Routing Internal Chainline Hub Compatibility 135 142 MTB Hubs B FA2474 Size:140Mm Carbon brake and shift CheckoutTitle=RockShox Super Deluxe Reservoir Assy Chainline Hub Compatibility 135 142 MTB Hubs Chainline Hub Compatibility 141 148 Boost Hubs Color Black Silver Defined Color Black Defined Color Silver Direct Mount Type Direct Mount SRAM Drivetrain Speeds 12 Material Aluminum Offset 3 Ring Position Type Chain Retaining Single Ring Round or Oval Round Tooth Count 32 } Atmos Sealed Construction Eliminates need for staples and bumpers on base of saddle Flat Forward Platform Allows ease of movement on the saddle Rear Rise Allows optimum power and comfort from sitting position Nylon Glass Base With Bridge Increases power transfer Deep Peri Canal Continuous relief channel from tip to tail Nose Platform Wider nose to aid in climbing Sonic Weld Added protection on corners of saddle Injection EVA Lightweight injection moulded foam