We use 3.4375" as our Standard 74" Piston Measurement
Made in the USA. - These are Forged Aluminum Pistons and are Superior Quality. - These are a little higher compression than the factory pistons. - They run much better than they're lower compression counterparts.
Pistons are a specialty item. They can not be held or set aside. There is a 20% restocking fee on returned pistons. Pistons/rings must be in new, unused condition.