Works on all Honda'85-86 ATC250R and'86-89 TRX250R models. Two stroke engines get more power from porting than they do from increased size, and this kit combines both.
Our porting is the best in the industry, guaranteed. When you have that AND the larger bore, plus increased compression from the Cool Head, you have a top end that will stomp the competition, and because it is a stock cylinder they will never know it's coming!You can get 20+ hp more, depending on what else is done to the engine. PRICES AND LISTINGS ARE SUBJECT TO CHANGE AT ANY TIME WITHOUT NOTICE. DO YOU MAKE A LIVING WORKING ON BIKES? ARE YOU A SHOP OR DEALER. At BPRATV we stock the same parts from different manufacturers so that when back orders occur we have an alternate part to send that is the same quality. This would be the ONLY reason your order might be slightly different when it arrives. 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 assembling and tuning the engine to make sure all the parts are correct and work properly.
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. This item is in the category "eBay Motors\Parts & Accessories\ATV, Side-by-Side & UTV Parts & Accessories\Engines & Engine Parts\Complete Cylinders". The seller is "bpratv" and is located in this country: US.This item can be shipped worldwide.