ALPINESTARS SMX+ Boots - Black - US 9 / EU 43 2221019-10-43 GP Knee Sliders Designed to increase horsepower and

Designed to increase horsepower and throttle response

Reflective piping on fingertips

Fitment: Yamaha YZ-450F + YZ-250F 2006-2007 Models

The baffle is rebuildable

Knuckle panel with perforated gusset construction to increase flexibility

ALPINESTARS SMX+ Boots - Black - US 9 / EU 43 2221019-10-43 GP Knee Sliders Designed to increase horsepower andAdvanced microfiber upper construction for lightweight high performance protection and superb levels of flexibility Front flex area is constructed with a soft microfiber for improving abrasion resistance and natural forwards and backwards movement Flexible accordion microfiber on Achilles gives enhanced natural movement Outside entry exit has stretchable accordion panel for a close fit and ease of entry and removal. Contoured high modulus shin plate