ALPINESTARS SMX-6 v2 Drystar® Boots - Black - US 4 / EU 37 2243017-10-37 2-into-1 Assault Exhaust System Outsole has an asymmetric stud

Outsole has an asymmetric stud configuration which provides excellent levels of grip and high abrasion resistance

The shorter than stock lower stacks feed the R1’s appetite for big air when the upper stacks raise improving top end power

The silencer is hung with a strapless Aluminum bracket this is powder coated black and riveted on the silencer

The thermoformed padded chassis and padded side wings offer optimal rider comfort

Feature a longer midsection for noise-conscious riders and more noticeable over-rev 6061 T-6 brushed aluminum housing 304 stainless steel intake tube Double-walled mounting brackets FIM-approved 304 stainless steel end cap Steel Allen-head screws for rebuilding/repacking Exclusive E-glass pillow packing

ALPINESTARS SMX-6 v2 Drystar® Boots - Black - US 4 / EU 37 2243017-10-37 2-into-1 Assault Exhaust System Outsole has an asymmetric studBoot upper incorporates an innovative front and rear bellows and rear calf zone for higher levels of flexibility Boot upper is constructed from microfiber for durability and abrasion resistance Ergonomic forefoot streamlining enables greater control of the bike's controls and provides a superior, wide ranging foot profile for excellent fit and comfort Alpinestars innovative TPU lateral ankle brace provides a biomechanical support between the lateral