BOYESEN RAD VALVE 89-92 YZ125, BLOCK RAD-33, RAD-33 Soft The DRC Seal head install

The DRC Seal head install protector kit contains 3 different sizes caps

Featuring a standout retro chequered flag pattern

a portable pump loop

Stainless Swivel Spring Kit

BOYESEN RAD VALVE 89-92 YZ125, BLOCK RAD-33, RAD-33 Soft The DRC Seal head installBoyesen Rad Valve RAD 33 RAD33 Now delivered with carbon fiber reeds for even greater performance gains Maintains flow velocity through the valve and redirects intake charge for more even distribution to the intake ports Sharper, quicker throttle response Added torque improves performance on hills, through corners and over technical jumps Increases horsepower in low , middle and especially the top end ranges One piece aluminum casting, no trimming or