RB Designs LLC
Machine Shop Services ~ Motorcycle ~ ATV ~ PWC ~ Small Engine ~ Custom Parts Machining
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Crank Rebuilding
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Machine Shop
Speciality Items
Carb Mods
Head Mods
Cylinder Boring
Yamaha YZ Head Mods
$75.00 = Standard YZ Head Mod 
$85.00 = YZ 250-X Head Mod
Plus Shipping and Handling 
Shipping and Handling; $18.00 alone,
or $5.00 when shipped with carb mod.
Perk up the performance of your Yamaha YZ with our tried and true head modification. This modification is a great enhancer to all of your performance up grades or as a stand alone mod.

Makes fine tuning and jetting more predictable with optimized combustion. This mod will increase torque, snap, ride-ability and helps with fuel mileage too!

Payment and Shipping Instructions
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.