Schwalbe Thunder Burt Tire - 27.5 x 2.1 Tubeless Folding BLK Evolution Super Ground Addix Speed CheckoutSpec= 68 Direct Mount native frames and

Direct Mount native frames and SRAM derailleurs are not supported

Elliptical 107 BCD Chainrings for SRAM

Ercolina Upper Body Power simulates in an extremely realistic way the movements of cross-country skiing

It is fully windproof and keeps you warm in inclement winter weather

Laser Etched Design

Schwalbe Thunder Burt Tire - 27.5 x 2.1 Tubeless Folding BLK Evolution Super Ground Addix Speed CheckoutSpec= 68 Direct Mount native frames andSchwalbe Thunder Burt Tire 27. 5 x 2. 1 Tubeless Folding Black Evolution Super Ground Addix Speed. Schwalbe Thunder Burt Tires. The development goal of this tire was to combine the best of the Racing Ralph and Furious Fred. With its many small lugs it has the grip of the Racing Ralph but the low rolling resistance of the Furious Fred. PaceStar: fast rolling cross country compound with easy rolling base layer fast center and grippy shoulders TECH SPECS