ALPINESTARS Supertech V Boots - Black/Fluo Red/White - US 11.5 / EU 46 2220121-124-46 Yamaha Crest T-Shirt 2021 Aprilia RSV4 1100 -

2021 Aprilia RSV4 1100 - - 2021 Aprilia RSV4 Factory 1100 - - 2021 Aprilia Tuono V4 1100 RR - - 2021 Aprilia Tuono V4 1100 Factory

Horizontal flexion grooves for an adaptive fit in different riding positions

Chest compartment with removable PE foam inserts (Nucleon chest protector available separately as an upgrade)

Three-stage

Ideal engine part to complete Koso's big bore kit Unique four-valve design increases air flow and performance Provides more power and torque Features a forged piston

ALPINESTARS Supertech V Boots - Black/Fluo Red/White - US 11.5 / EU 46 2220121-124-46 Yamaha Crest T-Shirt 2021 Aprilia RSV4 1100 -Almost every component of the Supertech R Boot, Alpinestars definitive racing boot as worn by a roster of champions past and present, has undergone a rigorous program of upgrades to sharpen its performance features even further. Featuring innovations derived using feedback from Alpinestars involvement in top flight racing, key elements include a newly redesigned front flex area, a redesigned rear protection and the performance of this boot to a new