MOTORCYCLE PERFORMANCE . KB Performance Motorcycle pistons are offered in Cast Hypereutectic 390 alloy and Forged 4032 low expansion alloy. Our 4032 alloy is preferred for high performance or high compression applications and offers offset wrist pins for a quiet engine operation.

This will not ever see real high boost like over 16 pounds but I want it to be safe at around 12-14psi and I just hear mixed reviews on the 

Ditto. KB's are great pistons IF YOU READ THE DIRECTIONS. they require a much larger ring gap. try to narrow it up and it will break. But, then 

Find Keith Black KB V-Twin Piston and Ring Kits and get Free Shipping on Orders Over $99 at Summit Racing! Keith Black KB V-Twin piston and ring kits bring all of the knowledge and experience of legendary engine builder Keith Black to the world of high performance motorcycles. These pistons use the latest manufacturing techniques and standards to ensure quality and maximum available

Shop Keith Black Pistons and get Free Shipping on orders over $149 at Speedway Motors, the Racing and Rodding Specialists. Keith Black Pistons in-stock with same-day shipping. Talk to the experts. Call 800.979.0122, 7am-10pm, everyday. GIFT CARDS

4/28 · The pistons are Keith Black hypereutectic 10.5:1 cr. My machine shop guy said this is a common problem with these pistons, and KB blaims it on tight ring gaps. I trust his knowledge just wanting to see if anyone esle has had the same problem.

As a performance engine builder and machine shop we don't build ANY engines with Hyper pistons as we have seen over the years that those pistons are not very DEPENDABLE compared to a good forged piston and the forged piston is quieter and will take more abuse. Remember the key word here is DEPENDABILITY.

The unique design & manufacturing processes combine to produce a rigid piston, which will rock less in the bore improving ring seal. These T-5 heat treated 

Keith Black. Keith Black Hypereutectic Pistons set the benchmark in performance cast alloy piston technology. KB Pistons carry a vast assortment of compression ratios available in dish, flat top and dome styles for most Chevy or Ford V8s. For Claimer racers who are on a budget, KB Claimer Series pistons will meet the tough requirements that

Piston kit Replacement 8.5:1 compression Ring Set Replacement Replacement Piston kit Piston kit Ring Set with Ring Set with

3/20 · I've got a mild 1978 360 stock heads,mild cam and flat top Keith Black hypereutectic pistons. I am wanting to add about a 100 or 150 shot of nitrous. Will the pistons hold up to the gas. These are cast not forged pistons. I've heard it doesn't take much to shatter these pistons. Just want to see what it will add to a Duster going down the track.