Wolf Tooth’s SDM chainrings replace your existing spider and chainring with one clean looking, light weight, and stiff piece of machined billet. These come in 3 different offsets: standard GXP, Boost and BB30. Compatibility: – These direct mount chainrings will replace your existing chainring and spider, which is attached via 3 bolts on the back side of the spider near the spindle. You will use these same 3 bolts to attach the Wolf Tooth SDM® chainring. There are 3 offsets: – Standard: 47mm chainline, 6mm offset for cyclocross and road cranks – Standard: 49mm chainline, 6mm offset for GXP and long spindle BB30 – Boost: 52mm chainline, 3mm offset – BB30: 49mm chainline, 0mm offset for BB30 short spindle cranks – Fat Bikes: If you are planning to use this on an X9 or XX1 fat bike crankset with a 190/197 rear hub spacing use the 0 offset ring. If your fat bike has a 170/177 rear hub spacing, use the Standard 6mm offset – If you have a BB30 crankset (30mm diameter Aluminum Spindle) this measurement will determine whether it is a long or short spindle:
Part Numbers
Option | UPC | MPN |
---|---|---|
Black / 30T | 812719020282 | BB3030 |
Black / 32T | 812719020299 | BB3032 |
Black / 34T | 812719020305 | BB3034 |
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