JT Rear Sprocket 3.42 - BMW: 13-18 F700GS; 08-18 F800GS; 13-18 F800GS (Adventure) 555841 It can decrease cylinder head

It can decrease cylinder head temperature up to 100 °F (37 °C) when idling in the sun and can be turned on/off by hand at will or by thermostat

It has 6 pressure arms that are weight adjustable

Unique heat shields which are cast from aluminum and fit all 1-3/4” (45 mm) pipes

Synthetic formula

Complete with all necessary hardware

JT Rear Sprocket 3.42 - BMW: 13-18 F700GS; 08-18 F800GS; 13-18 F800GS (Adventure) 555841 It can decrease cylinder headJT Steel rear sprockets are manufactured using Japanese C49 high carbon steel. Designed to minimise weight and maximise strength. Accurately machined to achieve balance and a perfect fit and chain alignment