The completely redesigned Turbine continues setting the benchmark for performance aluminum cranks and cements the Turbine legacy. Featuring the new Cinch System interface, the Turbine is an incredibly light & stiff performance crank-set for today's modern XC and trail rider. Imagine interchangeable spiders, limitless ring combinations, a 30mm alloy spindle and compatibility across all relevant frame standards. Quite possibly the most versatile crankset you will ever own. FEATURES Completely redesigned for 2015. The crank arms are deep pocket forged and CNC machined to optimize stiffness. Industry standard 30mm spline interface CNC machined from 7050 alloy. Removable spider offers the ability to convert between existing chainring standards while remaining flexible to future developments. SPECIFICATION Built for: XC Race / Trail / Enduro. Size: 170mm, 175mm. BB Options: BB92. 68/73 BSA. 100mm BSA. PF30. SEE BB CHART FOR FULL COMPATIBILITY OPTIONS). Spindle Diameter: 30mm. Weight: 175mm w/o BB: 568g. B.C.D. 64/104mm: 720g (24/38T). Spiderless Direct Mount: 30,32,34T - 675g (32T 170mm with BSA BB). Chainline: 2X w/bash: 47mm. 2X w/o bash: 49mm 3X: 51mm. DM: 51mm. Installation Instructions