Kawasaki SXR1500 SXR 1500 SX-R STX-15F, Ultra250, Ultra260, Ultra300

APE valve guides are designed to take the abuse of today's modern high horsepower engines. They are made from special bronze alloy to resist wear and heat. No other valve guide that you can buy will out-perform APE guides. Fact is we supply our guides to nearly all of the top cylinder head shops. Major police departments use them in their patrol bikes which see severe use. APE guides are precision machined with the bores finished to size.
They are designed to fit lower in the head to clear high lift cams, and use APE seals or factory OEM seals.