1989-2004 Kawasaki KX500 Center Power Valve assembly| 12023-1058 & 12005-1111
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The ultimate upgrade for the legendary KX500 power valve system.
The stock center power valve assembly is a notorious wear item, prone to carbon pitting, binding, and structural fatigue under the violent exhaust pulses of a 500cc two-stroke. We’ve completely re-engineered this critical component using cutting-edge manufacturing technology.
By leveraging modern metal 3D printing, we’ve integrated complex internal features that are physically impossible to achieve with conventional machining or casting. This allows us to pull weight out of the assembly—making it lighter than stock to reduce strain on your power valve linkage—while dramatically increasing overall durability.
What’s Included:
- 3D-Printed 316SS Center Exhaust Valve Flapper (OEM Ref: 12005-1111)
- 3D-Printed 316SS Center Valve Holder (OEM Ref: 12023-1058)
Why 316 Stainless Steel & Metal 3D Printing?
Lighter Than Stock: Advanced internal pocketing reduces moving mass without sacrificing structural integrity, reducing wear and tear on the critical operating mechanism.
Corrosion & Carbon Resistance: Grade 316 stainless steel naturally resists the corrosive exhaust gases and aggressive carbon buildup that plague stock components, making cleanup during routine maintenance incredibly easy.
Engineered to withstand extreme two-stroke heat and vibration without warping or cracking, ensuring your powerband remains predictable and crisp ride after ride.
Drop-In Fitment: Engineered to seamlessly replace OEM part numbers 12023-1058 and 12005-1111 inside the stock 1989–2004 cylinder.
