For severe racers looking for smart fat cost benefits and optimized rotating fat, XRAY's brand new optional lightweight 1st gear drive flange created from 7075 T6 aluminum ended up being strategically lightened (compared to the standard #335530 flange) to lessen rotating fat while not having to lose energy or durability. Includes factory-pressed top-notch German 1-way bearing, hand-ground for optimum operating precision and power. The 1-way bearing is non-replaceable the moment exhausted, such that it needs to be usually serviced, washed, and oiled frequently (we recommend using #309580 One-way Lube). Orange color.