SRAM Red BB30 Double Chainset 2011: Fatigue, flex & friction, enemies all, & theyll rob you of speed & performance over both the short & long hauls. The SRAM Red crankset does its part to keep them from affecting your ride. The integrated carbon spiders design is lightweight & extremely stiff, allowing for instant, efficient power transfer. Speed-sapping friction™ The Red Crankset virtually eliminates it with new hybrid ceramic bearings housed within the GXP BBs case. Ceramic bearings ride in a stainless steel race, are more efficient, use a lighter seal, & are lighter, stiffer & longer-lasting than normal bearings. Matched to the new crankset is an equally revolutionary pair of chainrings. Optimized exclusively for Red components, theyre stiffer than anything ever before, for greater efficiency as well as incredible power-transfer ability. The end result: a crank thats evolutionary in its design & revolutionary in its ability to put you at the front of the pack no matter which size you choose. New larger diameter bottom bracket delivers weight saving stiffness. The SRAM Red group is now the worlds first sub 1900g. A new international standard option to the bottom bracket market is the BB30, which delivers several advantages over the current 24mms. From enhanced stiffness to a narrower profile, numerous leading manufactures have adopted this new option. SRAM will offer the BB30 in its 2009 product line as part of the Red group, providing both crank & bottom bracket availability. Integrated carbon-spider construction is light & stiff for greater power transfer with less effort. New Red Power Glide chainrings are designed to professional-grade shift, stiffness & durability standards. Specifications: Arm Material
- Carbon Chainring Material
- AL 7075-T6 Aluminium/ Alloy chainring bolts Weight
- 760g with BB Arm Lengths
- 170mm, 172.5 & 175mm Chainring Ratios
- 39/53 Compatibility
- GXP Team BB with Black Box Ceramic bearings BB30 Facts: Narrower profile (low Q) Lighter than standard 24s enhanced stiffness Larger bearings Longer bearing life