RB Designs LLC
Machine Shop Services ~ Motorcycle ~ ATV ~ PWC ~ Small Engine ~ Custom Parts Machining
Yamaha Twin Head Modifications
Banshee and RZ Head Mod = Discontinued, we no longer do these mods
RD 350, RD 400 Head Mod = $140.00
400 Head Mod = $170.00
Head mod includes; Mill deck surface and re-cut and set squish band and volume cc
Please feel free to contact us
for more information
Head Mod Requirements
When sending your head, make sure it is very clean and coolant free. Please remove the water spout on the top
of the head (if it uses a removable one) and remove any alignment pins that may have stuck in the head. The head must be totally stock
with no other mods, or blow-up damage, or detonation damage.
ALL heads need to have a Squish Band Clearance Test
done and at least
3 test solders supplied with the head to be modified.