IMUST Carbon Fat Bike Full Suspension Frame Glossy 26er 12x197mm 16/18/20 inch 120mm rear travel, when used with Rockshox Monarch 200x51mm shock, supports 31.6mm rigid or dropper seatposts. Tapered head tube (1-1/8" to 1-1/2") with integrated bearing seats. Compatible with all forks including: Rockshox Bluto, MRP Mastodon, Wren, and more. All cabling is internal. Clean design and easy maintenance.Standard threaded BSA 120mm bottom bracket.12x197mm thru-axle rear.No more creaking from press-fit bearings. Toray T-700 high modulus carbon, stiffer, stronger and more vibration compliant than any other material. All four pivot points utilize bearings for the smoothest ride ever. Full-Suspension, carbon fat bike frame that can accept 4.8" tires (when mounted on 26", 90mm rims). Compatible with all 1x drivetrain systems: SRAM, Shimano, and others.