Black Zinc ZBK Sprockets

New for 2017, heat induction hardened high-carbon steel rear sprockets are designed, developed and tested in the UK.

Produced to exact specifications in China for JT Sprockets, to meet or exceed all OEM quality standards.


. Made from C45 high carbon steel

. Teeth heat-induction hardened to 38-50 HR

. Black zinc finish


For a limited time the ZBK sprockets are available at the same price as the standard JT sprocket.




Larsson Czech s.r.o.

Kaštanová 489/34
620 00 Brno

Tel.: +420 532 176 440
Mob.: +420 775 521 543