CRF300L Big Bore
PAIR Block-Off Kit
PAIR Block-Off Kit
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Reduce exhaust popping on decel and save over 2 pounds of unnecessary weight by ditching the CRF’s stock PAIR system and charcoal canister.
This machined-aluminum block-off plate replaces the hose spigot on your bike’s cylinder head. Simply unbolt the spigot, lift off the reed valve, remove the screen, reinstall the reed valve (it’s retained because it supports the rubber seal), position the block-off plate, and tighten the bolts. Then slide the provided cap onto the inner spigot on the airbox.
This product is intended for Closed Course Competition Use Only and may render the vehicle illegal for use on public roads.
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awesome! works as should and my kit came with both caps to seal off the vaccum ports. one on the intake box and the other right off of the throttle body on the head side. Looks clean and quality materials.
The part itself is a nice piece. I kind of wish it would have come with identification of the parts removed. I used the photo in the add to determine what could come off.
Looks great wish I had the option to purchase the closed loop connecter.

awesome! works as should and my kit came with both caps to seal off the vaccum ports. one on the intake box and the other right off of the throttle body on the head side. Looks clean and quality materials.
The part itself is a nice piece. I kind of wish it would have come with identification of the parts removed. I used the photo in the add to determine what could come off.
Looks great wish I had the option to purchase the closed loop connecter.