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Reviews (2)

17 September 2019
Affordable HP gain
It can be challenging to keep rare performance machines running on limited OE parts supplies. The Rad Valve 43x is not only is a proven product, but an affordable option to maintaining the reed valve/ intake boot for a rare beast like the KTM 440/550.
Been a customer for decades. Thank you Boyesen for meeting and exceeding my need for speed.

25 November 2024
Slightly different design at pivot, no r...
Slightly different design at pivot, no recess for factory bushing. Works fine.