New Product - Lightweight pistons and pins for stock 961 rods

Just in. Available in 88 through 90mm bore sizes. For iron or Nikasil cylinders. 10+ C.R. depending on bore size. Only 270 grams compared to 320 grams stock. The JS pins weight 73 grams comprared to 88 stock. Thats a total savings of 130 grams saving for a noticable reduction in vibration and engine stress. Expect more HP and higher RPM. JSmotorsport.com

jseng1 said:

Just in. Available in 88 through 90mm bore sizes. For iron or Nikasil cylinders. 10+ C.R. depending on bore size. Only 270 grams compared to 320 grams stock. The JS pins weight 73 grams comprared to 88 stock. Thats a total savings of 130 grams saving for a noticable reduction in vibration and engine stress. Expect more HP and higher RPM. JSmotorsport.com

Click to expand...

Are those gapless rings?