520 RK-M Chain, Front & Rear Sprocket Kit for POLARIS 250 Trail Boss 1985-1989

** Note: Items may arrive separately

RK 520 RK-M Standard Chain Natural, JT Front & Rear Steel Sprocket Kit for ATV/UTV POLARIS 250 Trail Boss 1985-1989 O.E.M. Gearing 13/42

RK 520 RK-M Standard Chain

Color: Natural

Type: 520

Links: 88

All chains are made with Japanese steel and meet all Japanese specs.

Japanese quality at a lower price point.

Suitable for 250cc max street use.

Average tensile strength of 6,800 lbs.

JT Front Steel Sprocket

Teeth: 13

JT Sprockets are made from the latest generation of computer design and control metal cutting equipment for maximum durability.

Front sprockets are made from chromoly SCM420 steel alloy.

All sprockets are heat-treated and hand-finished to meet or exceed the highest possible quality standards.

JT Rear Steel Sprocket

Teeth: 42

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 ultra-durable C49 high-carbon steel and T7075 aluminum.

All sprockets are heat-treated and hand-finished to meet or exceed the highest possible quality standards.

Brand: RK JT
Part Numbers:
1x 520-88
1x JTF3221.13
1x JTR1478.42