Added duration, lift and faster opening ramp speeds than the OEM Viper cam specs. Requires ECU tuning and other mods to benefit performance. Requires BC0950B (shim in bucket).
Yamaha OE Viper Spec: 240°/232° @ .050” / .372”/.353” Lift

Adv Dur (.020")
266°/260°

Dur @ .050
254°/244°

Valve Lift (1:1)
.387"/.380"

Valve Lift (mm)
9.83/9.65