BIG 165cc big bore kit! The 64mm bore is the kit to run on the z125 Pro if you machine your cases. Adding a Fuel controller is needed. We also recommend the bigger valve head. with this bore.

NOTICE:

• This product is NOT legal for sale, installation, or use on a pollution-controlled vehicle in the state of California. This product is NOT CARB legal. Legal only for racing vehicles in closed course competitions which will never be driven on a public right of way.
• Not for sale in California.
• ANY ORDERS FROM CA RESIDENCE WILL BE CANCELLED AND REFUNDED.
• Emissions Compliance Declaration: QUALIFIED MANUFACTURER DECLARED "MODIFIED PART"

165cc big bore kit has all the important elements to achieve higher performance and more power!

Kit specs and features:

• TB Bolt-in kit, Machined work is needed
• 64mm cylinder and piston.
• Head gasket.
• 10:1 Compression ratio

Steady Garage R&D:

Additional recommended operational parts:

• Case Boring is Neccessary and we offer this service. You will need to send in your cases. Please inquiry.
• Oil Cooler
• Aftermarket Fuel Controller: Bazzaz Z-Fi or Dynojet Powercommander V w/Autotune (for those who don't have access to a dynameter)
• Upgraded clutch parts: performance clutch springs and/or clutch disc

Optional parts for higher performance:

• Big Head Head or bore out throttle bodies
• Aftermarket exhaust system
• Chimera Short Ram Intake System

Professional installation is highly recommended!

Engine break-in, aftermarket fuel controller and special tune/autotune is required! Likewise with any major engine modification or bore up kits, it's now considered a high-performance race engine, extra attention and steps are needed to maintain a high-performance engine.

Disclaimer:

NO WARRANTY ON RACE ENGINE parts or engine bore up kits. There is no warranty stated or implied due to the unusual stresses placed on these parts and because we have no control over how they are installed and used. Steady Garage will not be held liable for any failure or damage caused directly or indirectly from use of these products or engine. The installation and use of these products or engine shall be conclusive evidence that the user assumes full responsibility for any damage caused directly or indirectly by their use.

This product is NOT legal for sale, installation, or use on a pollution-controlled vehicle in the state of California. This product is NOT CARB legal. Legal only for racing vehicles in closed course competitions which will never be driven on a public right of way.

This product is legal for closed-course competition use only; for racing vehicles (a competition vehicle not used on public highways). Intended for off-road use or race purposes; does not meet regulations of pollution-controlled roads or highways.