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he Rennen Ultralite Spider is the lightest 5 bolt Crank spider available
STEM: Forged Alloy Front Load
The crank arms spin on a beefy 30mm spindle permanently fitted into the drive-side arm
Weight: 773g
IRC SIREN PRO 20x1.75 he Rennen Ultralite Spider isDesigned by former World Champion, Olympic silver medalist and G. O. A. T contender Sam Willoughby, the Siren Pro offers BMX racers unparalleled performance on any track. Lightweight and fast rolling, the 120 TPI, tubeless ready tire rails turns, smooths out technical straightaways, and provides insane grip on the gate and out of corners. TUBELESS READY The Siren Pro performs great with or without tubes. Its Tubeless capable rigid sidewalls give you
