PISTON RINGS

Wiseco Forged Piston Kits
Forged from high-silicon aluminum alloy for superior strength and dependability. The unique shape permits tight piston-to-wall clearances for quieter operation. When combined with the ring package and CNC-machined anti-detonation grooves, it becomes one of the most technically-advanced pistons available. Kits include a pair of forged pistons, rings, circlips, and wrist pins. Piston kits for Evolution® models are available with either Wiseco XC-style or Hastings X-style rings.

Wiseco XC Ring Package Kits

Wiseco Forged Piston Kits For Sportster®Models 1972 thru 1985

Wiseco Forged Piston Kits For Panheads and Shovelheads Models 1966 thru 1984

Wiseco Forged Piston Kits For Panheads and Shovelheads Models 1966 thru 1984
1340cc 7:1

Wiseco Forged Piston Kits For Panheads and Shovelheads Models 1966 thru 1984
1340cc 9.5:1

Replacement Ring Set For 1340cc Panhead, Shovelhead and 1200cc & 1340cc Evolution Models 1966 to present

Wiseco Forged Piston Kits For Evolution® Models 1984 to Present
1340cc 10:1 These piston kits include Wiseco XC-style piston Rings.

Wiseco Forged Piston Kits For Evolution® Sportster Models 1984 to Present
1200cc 9:1 These piston kits include Wiseco XC-style piston Rings

Wiseco Forged Piston Kits For Evolution® Models 1984 to Present
1340cc 10:1 These piston kits include Hastings X-style piston Rings

Wiseco Forged Piston Kits For Evolution® Models 1984 to Present
1340cc 8.5:1 These piston kits include Hastings X-style piston Rings

Wiseco Forged Piston Kits For Evolution® Sportster Models 1984 to Present
1200cc 9:1 These piston kits include Hastings X-style piston Rings.

Wiseco 3 5/8" Forged Piston Kits For Evolution® Big Twin Models 1984 to Present
1438cc 9.25:1 These piston kits were designed for use with stock stroke rods and flywheels and include Hastings X-style piston Rings, head and base gaskets

Wiseco 3 5/8" Forged Piston Kits For Evolution® Big Twin Models 1984 to Present
1438cc 10:1 These piston kits were designed for use with stock stroke rods and flywheels and include Hastings X-style piston Rings, head and base gaskets

This 1200cc big bore conversion kit for Evolution® 883cc and 1100cc Sportsters® features Wiseco "matched-weight" reverse dome alloy pistons.

• Forged for strength, the "match weight" piston design duplicates the original 883 piston weights for reliable balanced performance. Dyno test with a stock 1987 XL883, this pistons produced an impressive 26% more horsepower
• The "reverse dome" design yields 9.75:1 compression ratio and allows easy installation without requiring combustion chamber modifications or recalibration. Kits come complete with piston, rings, wrist pins, circlips

Wiseco Forged Piston Kits For Evolution® Sportster Models 1984 to Present
883cc to 1200cc 9.5:1 These piston kits include Wiseco XC-style piston rings.

WISECO FORGED PISTON FOR EDELBROCK HEADS
These 10:1 compression pistons, forged from high silicone aluminum alloy, have ring groves that have been modified to accept stock style Hastings rings. Sold in kits complete with pistons, rings, wrist pins and circlips.

EDELBROCK/JE SPORTSMAN PISTONS
Edelbrock/JE Sportsman 10.5:1 compression pistons are designed to match the unique combustion chamber of Edelbrock Performer and RPM cylinder heads for maximum performance. Each Sportsman piston is forged from certified aerospace aluminum, CNC machined and inspected for trouble free installation without requiring additional balancing. Designed for use with valves up to 1.940" intake and 1.750" exhaust. Sold in pairs with rings, wrist pins and retainers

S & S PISTONS AND RINGS
S & S pistons are designed with maximum piston/engine life and performance in mind. Features include:

• Offset wrist pin to reduce piston slap and noise
• Piston-to-piston clearance at the bottom of the stroke is concentrated in the rear piston so a longer piston skirt can be maintained on the most critical area - the rear of both pistons

Forged pistons for Big Twins 1936-up with stock, longer 3-5/8" Big Bore cylinders, strokes from 3-31/32" (stock 74") to 4-3/4" and 4-5/8" stroke S & S Sidewinders®. Each piston includes rings, wrist pin and wrist pin keepers. Replacement ring sets sold each (one set for one piston).

Premium® Replacement Pistons
These exclusive pistons are made from molds and tooling built to our specifications, and feature a new design cam-shape and taper. The permanent mold die-cast pistons are made from SAE standard 321 aircraft-quality, low-expansion aluminum alloy. Other features include precision-ground skirts and a tin-plated finish to facilitate break-in, as well as an integral strut in the Shovelhead pistons that guard against expansion and distortion. Available in sizes for both early and late Shovelheads and 900cc or l000cc Sportster® models in stock and low compression versions. We also have pistons for most Evolution® motors as well. Sold each.

Custom Chrome® Pistons
These cast aluminum pistons provide a lower-cost alternative to our higher-quality Premium® pistons. They're available in stock compression versions only and come with fitted wrist pins and late-style piston 'E' clips. The pistons for Panhead and Shovelhead Big Twins feature integral steel struts for expansion and distortion control. All pistons will accept our standard replacement Custom Chrome® or Premium® piston rings. Sold each.

Premium Piston Rings
These ring sets are manufactured by Hastings and are the ideal combination of design and materials that work together as a team, delivering full power and lasting oil and blow-by control. All ring faces are pre-lapped for easier seating, and in the moly sets, the compression ring features a moly insert on its barrel face design. The exclusive Flex-Vent oil control ring is the easiest of all designs to install because there are no right sides up or sides down. It can't overlap, can't gouge and can't be installed wrong. The 80-plus shoulders on the die-formed stainless-steel stress relieved spacer-expander exerts uniform pressure on the rails assuring positive oil control, and with its open design affords 200% greater drainage capacity than conventional designs. Even with all these features, Hasting rings are made available by CustomChrome® at a low, affordable cost, resulting in the ideal combination of performance and value.

TEFLON WRIST PIN BUTTON KEEPERS
Preferred by many top engine builders, Teflon wrist pin button style keepers are available in different thicknesses depending on bore size and wrist pin length.Correct end play is .010" to .060". Sold in sets of four.