Which is the best YZ125 big bore Stroker?
This is it, the ONE and ONLY YZ167. It is our most asked about kit for the YZ125 and it has been for many years. This kit is very popular with Vet racers of all levels and works well no matter how you ride it. It can be lugged like a 250 or screamed like a 125, it does both equally well.
What kind of bore does a yz167 cylinder have?
Engine Modifications Included: This is a complete engine build. It requires you to send us your YZ125 engine and we will modify it to a YZ167. Cylinder: Bore, Port and Replate with Ceramic Nickel Bore coating.
Which is the best Yamaha 2 stroke kit?
The 2-Stroke Revolution is real and our YZ144 M-Spec Big Bore kits truly make your 2-Stroke equal to or better than modern 4-Strokes. The 1999 – 2018 Yamaha YZ125 134cc / 144cc kits are our most popular M-Spec Big Bore Kits!
How many HP does a Yamaha YZ125 have?
Big hp, small price. Ask about our powerjet carb conversion! This combo is truly incredible for a 125cc engine at an even better price, pushes the yz to the 39hp mark with great mid range. The fastest schoolboy 1 legal yz125 available, period.
This is it, the ONE and ONLY YZ167. It is our most asked about kit for the YZ125 and it has been for many years. This kit is very popular with Vet racers of all levels and works well no matter how you ride it. It can be lugged like a 250 or screamed like a 125, it does both equally well.
How big is the YZ250 big bore kit?
Our biggest YZ kit! The 301 is a 73mm custom made forged piston with some added adjustments. If your looking to out run the 450’s this is the one you want. We are currently racing this in CA in some enduro desert 6, 8 and 24hr races.
Engine Modifications Included: This is a complete engine build. It requires you to send us your YZ125 engine and we will modify it to a YZ167. Cylinder: Bore, Port and Replate with Ceramic Nickel Bore coating.
What kind of pistons are in a Yamaha YZ250?
Head and Power Valve modification along with Top End gaskets and Bearing are all included. If you want the most power out of an old horse this it the way to go! This YZ kit is a newer because 72mm pistons are available from Wiseco and Wossner as a stock part. Your cylinder is bored and Nikailed plated to a 72mm piston.