20" Twisted Lowrider Frame Chrome. Bike frame, bicycle frame, lowrider bike frame, lowrider bicycle frame We carry over 3,000 bicycle parts and accessories. If you have any questions about any of our parts, please send us an email. Frame Size: Length: 32 3/4" Height: 14 1/4" Clamp: 25.4mm, Head Tube Size: Long: 102mm ID:32.5mm, Material: Steel