Yamaha Banshee 421 Cheater 68mm Stock Cylinders Big Bore Ported Top End Rebuild

  

SNEAKY 421cc CHEATER TOP END! Stock cylinders bored, re-sleeved, and STAGE 3 match ported with 68mm cast iron sleeves. Cylinders and piston rings are sized to pistons. Wiseco or Wossner 68mm forged pistons for 4mm stroker crank.

Top end gasket and o-ring kit. Talon Titanium cylinder head stud kit. No case mods are required, but you can not use this with the stock head unless it is machined for this set up.

If using a cool head, domes must also be machined for this set up. We can do either for you. Although it is not required, we recommend larger carbs and aftermarket exhaust with this kit. Runs on pump or race gas.

A +4mm stroker crank with 115mm rods IS REQUIRED to use this kit. A stock crank WILL NOT WORK. Compatible with all Yamaha Banshee models and years. Feel free to visit us on the web, give us a call, come in to our Upland, CA location.

DO YOU MAKE A LIVING WORKING ON BIKES? ARE YOU A SHOP OR DEALER. PRICES ARE SUBJECT TO CHANGE AND LISTINGS MAY BE REVISED AT ANY TIME WITHOUT NOTICE. 99% of problems can be easily solved without returning the entire order.

Once items have been modified, installed, or used in any way they are not eligible for return. This product is NOT DIY. Over 99% of people in the world are not qualified to build an engine, and it is the responsibility of the person doing the work to ensure the parts work correctly. We ALWAYS STRONGLY recommend parts be installed by a qualified, experienced mechanic. Also, we want information from customers when their experience is less than desirable so we know what areas need improvement the most.

Please work with us and we will ALWAYS work with you.