Kink Whip XL BMX Bike 2020One of Kink's most popular models, the Whip, is also available in a XL 21 toptube size. This beast is constructed using full 100% 4130 chromoly throughout the entire frame, fork and handlebar set. Complimenting this strong, durable structure are sealed bearings everywhere; headset, bottom bracket, and both front and rear hubs. The front rim has also been upgraded to the Mission Mylar, giving this bike double wall rims both front and rear. Topping off