BOYESEN 04-11 RM250 BOYESEN RAD BLOCK, BLOCK RAD-24K, RAD24K 2026 KZ1000D (Z1R) 78-80

KZ1000D (Z1R) 78-80

25mm (1”)

Enhances intake duration and lift for better engine breathability and horsepower

ensuring riders can focus on the track

FE 450 04-08

BOYESEN 04-11 RM250 BOYESEN RAD BLOCK, BLOCK RAD-24K, RAD24K 2026 KZ1000D (Z1R) 78-80Boyesen Rad Valve RAD 24K RAD24K 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