Through years of extensive testing on both road and track, JS Motorsport has developed high-end products in a modern format that will increase a Norton’s performance, reliability and rideability. JSM lightweight pistons & rods give you the smooth running Norton of your dreams.
Showing 13–24 of 111 results
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Wrist pin clip set for two JS lightweight pistons
$12.00 Add to cart -
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Two 6.4″ long lightweight forged Carrillo rods for standard Norton 89mm stroke 750s above 75 HP and all 850s, 920s, 1007s. For JS pistons only.
$649.00 Add to cart -
Two Ultralightweight 6.4″ long std stroke forged Carrillo rods for JS pistons only. For Norton 750s up to 75 HP and 650cc Dominators, (contact us for 500-600 Domni rods)
$649.00 Add to cart -
Two 6.57″ length forged Carrillo rods for 80.4mm short stroke Nortons. For JS pistons only.
$729.00 Add to cart -
Two Lightweight 5.875″ stock length forged bushless Carrillo rods for stock Norton pistons or JS stock rod pistons (.687″ dia pins). DLC pin coating required.
$749.00 Add to cart -
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Longer lasting Radius cam for use with JS lightweight radiused lifters or stock lifters radiused to 1-1/8″ for Commando, Atlas/Domni. Will not work with stock flat lifters.
$449.00 Select options This product has multiple variants. The options may be chosen on the product page -
Kit #0 – Reduced shank ARP 3/8″ x 16 tpi SS cylinder through bolts with rolled threads for ALL BOLT THROUGH CYLINDERS (iron and alum – stock, Maney or Molnar).
$89.00 Select options This product has multiple variants. The options may be chosen on the product page -
Kit #1 – Reduced shank ARP 3/8″ x 16 tpi SS head bolts with rolled threads for MANEY or MOLNAR ALUM CYLINDERS. Requires inserts for Molnar.
$109.00 Select options This product has multiple variants. The options may be chosen on the product page -
Rocker cover gasket set
$19.00 Add to cart -
Four rocker spindle cover gaskets. Only 4 needed with our one piece rocker spindle covers (8 are needed for the original spindle covers)
$16.00 Add to cart
