Chain kit EK - Zlat chain 520 RRSM, Non-sealed, CHK front sprocket SUPERSPROX, CHK rear sprocket JT for HUSQVARNA WR 250 1983-1984

This highly specialized chain kit features chains designed for road and circuit racing. The components combine minimal friction with the necessary durability under extreme conditions, offering high resistance to impacts and wear.

Chain EK RRSM

Narrow Racing Chain
EK’s Road Race / Supermoto chain is the most narrow 520 pitch chain on the market. When you’re serious about racing, this chain provides the lightest weight possible without compromising strength and dependability. Also available unsealed in 415 pitch for smaller applications.

EK’s SX-Ring is an even slimmer profile racing specified seal utlising the same ‘X’ style design that provides 40% less friction than a normal O-ring seal. Combining this with the extra low profile allows this seal to achieve the best wear to use ratio of any QX-Ring option. This seal is exclusive to EK’s narrow racing chain line ‘RR/RRSM’.

Supersprox Front Sprocket

Supersprox countershaft sprockets are factory-team spec parts (used in WSBK, MXGP, and Rally) made from ultra-durable, carbon-impregnated SCM-435 (18HGT) steel for maximum strength. They feature a lightened design with radial holes or slots, an ultra-hard surface layer to reduce chain friction, a black oxide coating to prevent corrosion, and self-cleaning grooved teeth on off-road models to extend chain and sprocket life.

JT Steel Front Sprockets

JT Steel Front Sprockets are manufactured using only the finest grade of SCM420 chromoly steel alloy. The JT Steel Sprockets range now contains over 2,500 parts for all motorcycles and ATVs.

PDF EK CATALOG
PDF EK chain product info_R Series