JS Ultralight Rods & Pistons 500 to 650

The bushless ultralight rod below was designed for 500 to 650 Dominators and long stroke 750s up to 75 hp. They weigh 10 grams less on the small end than our regular bushless rod. Small end = 95 grams. Big end = 307 grams. This ultralight rod provides maximum smoothness.  DLC pins only.

66 – 67.5mm flat top pistons for 500 Dominator

Flat top pistons below are approx 7.5 C.R. for a 500cc Dominator. They weigh about 165 grams and go with our Ultralight 6.4″ length rods (6.4″ Ultralight rods for 1.5″ journals are available on special order). Long rod piston shown below. Also available for stock rods.

66 – 67.5mm Medium C.R. domed pistons for 500 Dominator

Medium domed 9 C.R. pistons below for street. Less weight than stock. Stock rod pistons shown below. 185 grams.

66 – 67.5mm Hi C.R. domed pistons for 500 Dominator

Domed pistons below for street or racing. Less weight than than stock. Stock rod pistons shown below. 9.5 C.R. for street premium fuel or 11 C.R. for racing fuel only.

500 Dominator pistons with 6.4 JS Carrillo ultralight rods

9.5 C.R. for street premium fuel or 11 C.R. for racing fuel only. Approx 175 to 180 grams

After two hard racing seasons

68 – 69.5mm Flat top pistons for 600 & 650ss Dominator

Flat top pistons below are approx 8.5:1 C.R. for 650SS Dominators.  Stock rod piston shown below.

68 – 69.5mm Hi C.R domed pistons for 600 & 650ss Dominator

Domed piston below are available in 9.5 10.5 C.R. (also 11 C.R. for racing fuel) for 600 & 650 Dominators. They weigh approx 165 grams and go with our Ultralight 6.4″ length rods. Stock rod pistons also available.