This is the Track specific version of the hugely popular and innovative Omnium trainer. Specifically designed for fixed gear track bikes, this simple fork-mount design is optimized for pre-race warm-up, travel, and those cold winter days at home. The Omnium trainer utilizes Internal Progressive Resistance (IPR): delivering a real-road feel with minimal noise. Features: No resistance for track bikes No assembly required-simply unfold and mount bike Bearings are greased and sealed, requiring no maintenance Includes heavy-duty tote bag for transport and storage Specifications: Total weight: 13.2 lbs (6.21 kg) Folded dimensions: 25.75" x 7.25" x 8" (66 cm x 18 cm x 20 cm) Accepts forks w/ standard QR:, 12 x 100, 15 x 100 & 15 x 110 (boost) thru axles Accommodates wheel sizes: 600c - 700c, 26"-29" Aluminum drums: 4.0" diameter, double-wall design Rider weight limit: 300 lbs Wheel base: from 840mm to 1200mm 3-Year Warranty <span id="XinhaEditingPostion"></span> <span id="XinhaEditingPostion"></span>