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ISIS is a splined interface bottom bracket/crank design used by Truvativ FSA Raceface and other brands
Top-of-the-line rear derailleur with generous use of carbon fiber and titanium for maximum performance at minimal weight
Features a raised center for fast rolling on asphalt
5Lockout Switch Shock Mounted SwitchMetric YesEyelet Diameter (mm) 12
side panels that expand out into panniers
Topeak MTX BeamRack II Seatpost Mount Rack - A-Type Small Frames MFPN=11A00801 ISIS is a splined interfaceTopeak MTXS BeamRack II Seatpost Mount Rack A Type Small Frames. The Topeak Beam Seatpost Mount Rack carries up to 20lbs and comes in three variations to cover different frame sizes. The quick release clamp allows for easy removal for weekend rides. Fits 25. 4 31. 8 mm seat posts Tough 6061 T6 aluminum construction Hinged seat post clamp with aluminum quick release lever Perfect for mountain and trekking bikes Carries 20 lbs and loads with ease
