RB Designs LLC
Machine Shop Services ~ Motorcycle ~ ATV ~ PWC ~ Small Engine ~ Custom Parts Machining
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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
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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.