Jt Sprockets JTR1857.39 Steel Rear Sprocket - 39T (Natural) graphics-stickers-decals Rubber wrap reduces vibration and

Rubber wrap reduces vibration and fatigue

multi-valve racing engines

Chrome or Satin Black

soft sealing ring for extra protection

Ds high-performance O-ring chain

Jt Sprockets JTR1857.39 Steel Rear Sprocket - 39T (Natural) graphics-stickers-decals Rubber wrap reduces vibration andMarketing Color: Natural Material: Steel Sprocket Position: Rear Sprocket Size: 520 Sprocket Teeth: 39 JT Sprockets are made from the latest generation of computer design and control metal cutting equipment for maximum durability. JT rear sprockets are made from the finest C45 high carbon steel. All sprockets are heat treated and hand finished to meet or exceed the highest possible quality standards. Induction hardened with black zinc finish available