BOYESEN 2001 KX125 BOYESEN RAD VALVE, BLOCK RAD-11H, RAD11H motul oil Simply bolt straight on to

Simply bolt straight on to the engine casing

RK chains recommended OE upgrade chain and sprocket kit Contains: Sprocket Rear RK-B4016-40 JTR701 Afam 44203 | Sprocket Front RK-C4017-14 JTF394 Afam 61201 (Out of stock) | RK Chain and Sprocket Kit Box | RK 520H-104 Heavy Duty Chain

Yamaha YZ250 22-24

Enduro 492

8 kg) over the standard stock exhaust

BOYESEN 2001 KX125 BOYESEN RAD VALVE, BLOCK RAD-11H, RAD11H motul oil Simply bolt straight on toBoyesen Rad Valve RAD 11H RAD11H 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