TB 178cc Big Bore Kit w/ V2 Race Head and Intake Manifold - Kawasaki Z125
TB 178cc Big Bore Kit w/ V2 Race Head and Intake Manifold - Kawasaki Z125
TB 178cc Big Bore Kit w/ V2 Race Head and Intake Manifold - Kawasaki Z125
TB 178cc Big Bore Kit w/ V2 Race Head and Intake Manifold - Kawasaki Z125
TB 178cc Big Bore Kit w/ V2 Race Head and Intake Manifold - Kawasaki Z125
  • SKU: HTB-1057-178

TB 178cc Big Bore Kit w/ V2 Race Head and Intake Manifold - Kawasaki Z125

$639.99
Shipping calculated at checkout.
FOR CLOSED COURSE COMPETITION USE ONLY. NOT INTENDED FOR STREET USE. THE MANUFACTURE, SALE, OFFER FOR SALE, OR INSTALLATION OF THIS PRODUCT MAY ALSO BE ILLEGAL NATIONWIDE UNDER THE FEDERAL CLEAN AIR ACT (42 U.S.C. § 7522(A)(3))

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DESCRIPTION
  • NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY POLLUTION CONTROLLED MOTOR VEHICLES

TB 178cc big bore kit with V2 Big Valve Race Head! The 67mm bore kit will require the machining of your cases. 67mm is the max bore kit that you could machine the engine cases to fit. Comes with TB Intake Manifold.

Pictures are for reference only.


178cc Big Bore Kit:

  • 67mm Ceramic coated all aluminum cylinder (no steel sleeve)
  • Lightweight high compression 67mm piston with rings, pin, & clips (will safely run on pump gas, 90-93 octane)
  • Head gasket kit – Now includes the cylinder head o-ring set and an exhaust gasket.

The all aluminum ceramic coated cylinder is not only lighter than a steel sleeved aluminum cylinder, it is harder, reduces friction (increasing power), improves sealing, and provides better heat transfer (runs cooler and cools down quicker). This kit requires case boring for installation. The engine cases cant safely be bored any bigger and for this 67mm cylinder, you definitely will want an experienced shop to bore your cases.

Race Head V2:

  • Forged anodized aluminum roller rockers
  • Huge 30mm intake and 24.5mm exhaust valves
  • Stainless Steel Valves (21-4N material)
  • 27mm intake port, 23mm exhaust port
  • Race Camshaft V2-2 (TBW0577)
  • Cam Sprocket

The combination of the above features in this Race Head V2 deliver huge power gains over the stock basic OEM cylinder head.

Intake Manifold Kit:

  • Port matched to the Race Head V2
  • Enlarged 26mm port on the throttle body side to work better with bored throttle bodies (also works well with stock throttle body)
  • Includes a port matched heat stop to prevent heat transfer to the intake (cannot run a heat stop with the stock intake manifold and some aftermarket head spacers)
  • Includes all mounting hardware
  • Includes a heat sensor extension harness so it can be relocated to the tappet or cam cover.

This intake manifold will ensure you will get the most power out of the Race Head V2!

Add a stroker crankshaft for even more power! Our 55mm stroker crank increases engine displacement and compression. If you add it to the:

143cc Big Bore Kit, will increase displacement to 155cc
165cc Big Bore Kit, will increase displacement to 177cc
178cc Big Bore Kit, will increase displacement to 194cc

Steady Garage R&D:

Additional recommended operational parts:

  • Oil Cooler
  • Aftermarket Fuel Controller: Aracer RC Mini 5, 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:

  • Bored 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 the use of these products or engines. The installation and use of these products or engines shall be conclusive evidence that the user assumes full responsibility for any damage caused directly or indirectly by their use.

  • NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY POLLUTION CONTROLLED MOTOR VEHICLES
⚠ WARNING: California Proposition 65 Warning www.P65Warnings.ca.gov.

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