This is the hardest question to answer as an engine builder. To know exactly what it is you want from a motor and/or bike. That is why the "Type of Motor Work" page was created. You, as the customer can decide what kind of motor package will work best for your application. Please take a few minutes to read through it and choose a port job from the list below .

BEFORE

AFTER

Play Porting
Honda 250R (1985-1989) $150.00 (per cylinder)
Banshee (all years) $250.00 (per set)
Blaster (all years) $150.00 (per cylinder)

Play Race Porting
Honda 250R (1985-1989) $225.00 (per cylinder)
Banshee (all years) $350.00 (per set)
Blaster (all years) $225.00 (per cylinder)

Full Race Porting
Honda 250R (1985-1989) $275.00 (per cylinder)
Banshee (all years) $450.00 (per set)
Blaster (all years) $275.00 (per cylinder)

Methanol Porting
Honda 250R (1985-1989) $315.00 (per cylinder)
Banshee (all years) $525.00 (per set)
Blaster (all years) $315.00 (per cylinder)

For those who have known Dave over the past 20 years, you will remember he started out on a 1985 ATV 350X and after getting teased by all of his 2 stroke buddies, he turned that little 350 in to the fastest 350X he ever ran into. 4 strokes are different in respect to their port work. In a 2 stroke, the porting not only controls the flow of the motor but also controls the power band. In a 4 stroke, porting controls flow and velocity but it's the cam that controls the power band. In Dave's years of experience, he feels he has found the majority of porting techniques that work best for the 4 stroke head.

Honda 400EX (all years) $300.00
Honda 450R $325.00
Raptor (2001-2005) $350.00
DS650 (all years) $325.00
YFZ450 (all years) $325.00
Pricing:
4 Stroke Head Porting
Pricing:

A - arms

Axles
Axles