BOYESEN RAD VALVE 89-92 YZ125, BLOCK RAD-33, RAD-33 Soft Z 1300 (1979-1983)

Z 1300 (1979-1983)

2017 - 2026 KTM 500 EXC-F

Stainless Swivel Spring Kit

Featuring a standout retro chequered flag pattern

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

BOYESEN RAD VALVE 89-92 YZ125, BLOCK RAD-33, RAD-33 Soft Z 1300 (1979-1983)Boyesen 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