B58 Gen 1 and 2
82mm pistons made by JE Pistons
Ultra Series pistons combine JE’s premium features and all-new, industry-first technology into an off-the-shelf piston kit! This includes aligned grain flow technology, a proprietary JE technology that aligns the grain flow in critical areas of the piston to improve strength, and several other high-end features.
JE's revolutionary Perfect Skirt coating is one of the many technologically advanced aspects of the Ultra Series. It protects the piston skirts, reduces friction, while eliminating cold-start piston slap and false knock on computer-controlled engines.
All Ultra Series pistons will come standard with ceramic crown coating to help reject combustion heat for durability and better exhaust scavenging characteristics.
Thicker, premium-material wrist pins are another, strength-boosting feature of the Ultra Series line. Combined with unique Grain Flow Optimized forging technology, the Ultra Series is ready for huge power.
Grain Flow Optimized Forging
Lateral Gas Ports
Perfect Skirt Coating
Double Broach Pin Oiling
Upgraded 9310 Pins and locks
Carbon Steel Nitride Rings
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