EK MRD
and MRDL non-sealed chains are the same ones that the Amsoil/Chaparral/Factory
Connection Honda team of Kevin Windham and Mike LaRocco used to win
six AMA Supercross main events in 2004. Our 420SH and 428 SHDR provide
this same winning performance for mini riders. The 520MRD chain is
also available in colors to match your bike.
520MRD:
Get the Same Chain the Pros Use
“Our EK 520MRD chains go an entire day of racing without a single
adjustment,” says Paul DeLaurier, mechanic for Mike LaRocco’s
Factory Connection team. “Other chains we’ve tried stretch
so much that we had to adjust them after every moto.” Recommended application: up to 250cc (2-stroke) or 500cc (4-stroke),
up to 70hp Available colors: gold, red, blue, green, yellow Tensile strength: 8400 lbs. Available lengths: Up to 120 links
520MRDL:
Our Smallest, Lightest 520 Motocross Chain
The entire Factory Connection Honda 125 team uses the ulltralight,
ultrastrong 520MRDL. But it's not just a great MX chain; road racer
Rich Oliver used the 520MRDL in winning the 2003 AMA 250 Grand Prix
Championship. Recommended application: 125cc (2-stroke) or 250cc (4-stroke),
up to 45hp Available colors: gold Tensile strength: 6600 lbs. Available lengths: Up to 120 links
420SH
& 428SHDR: EK Quality and Performance for Minis
Mini riders can get the same EK Chain quality as the pros. With solid
bushings and rollers, high-strength heat treating and remarkably light
weight, the 420SH & 428SHR provide outstanding performance and
remarkable value. Recommended application: up to 100cc/30hp for 420SH; up to
200cc/40hp for 428SHR Tensile strength: 5200 lbs. for 420SH; 5000 lbs. for 428SHDR Available lengths: Up to 120 links
Motocross Chain Applications
By Engine Displacement
50cc
420SR
420SH
415SHD
85cc
420SR
428SR
428SHDR
100cc
428SR
428SHDR
110cc
428SR
428SHDR
125cc (250 4-stroke)
520MRDL
250cc
520MRD
350cc
520MRD
400cc
520MRD
500cc
520MRD
Note: These are only general recommendations.
Refer to your owner’s manual, the EK chain
selector or check your current chain to determine the correct
chain size for your bike.
