520MRD: Get the Same Chain the Pros Use - MX
“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
Tensile strength: 8400 lbs.
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.
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
530ZZZ: The Ultimate Street Performance Chain
The 530ZZZ features a revolutionary new sideplate profile that more effectively distributes the load on the sideplate. The result is incredible tensile strength without increased weight. More details...
Recommended application: 1100cc and up
Available colors: metalflake gold, metalflake silver
Tensile strength: 11,000 lbs.
ZVX Series: The Extreme Chain for Extreme Bikes
Anyone with a Hayabusa, ZX-12 or one of the new generation of 180hp literbikes knows how hard they are on chains. EK steps up with an incredibly strong Quadra-X Ring chain that has proven its superiority in controlled lab tests. ZVX chains are also great for any bike that’s been modified for more-than-stock horsepower. The 530ZVX is available in colors.
Recommended application: over 1000cc, up to 180hp
Tensile strength: 10,560 lbs.
MVXZ Series: Premium Quadra-X Ring Chains - Most Popular
Street, MX, ATV
We strongly recommend these Quadra-X Ring chains as the ideal replacement for the original equipment chain on your 600 to 1000cc sportbike. Features like solid bushings, lightening holes in the sideplates, large-diameter pins, and friction-reducing Quadra-X Rings help ensure high-performance and durability. MVXZ chains are available in colors.
Recommended application: up to 1000cc/100hp for 520MVXZ; up to 1000cc/130hp for 525MVXZ; up to 1000cc/145hp for 530MVXZ
Tensile strength: 9000 lbs. for 520MVXZ; 9300 lbs. for 525MVXZ and 530MVXZ.
Zero Stretch Technology available as an option on all MVXZ chains.
SRX Series: Value-Priced Quadra-X Ring Chains
Street, MX, ATV
SRX-series chains offer excellent value, and improve on the SRO-series chains with the superior sealing and reduced friction of EK Quadra-X Ring seals.
Recommended application: up to 650cc/80hp for 520SRXL; up to 750cc/90hp for 520SRX; up to 900cc/110hp fo 525SRX; up to 1000cc/120hp for 530SRX
Available colors: gold
Tensile strength: 8000 lbs. for 520SRXL; 8500 lbs. for 520SRX; 8800 lbs. for 525SRX; 9200 lbs. for 530SRX
SRO Series: Economical O-Ring Chains
Street, MX, ATV
Value-priced O-ring chains that don't compromise on quality or durability, with such features as solid bushings, solid rollers and high-tech heat-treated steel alloys.
Recommended application: up to 650cc/50hp for 520SRO; up to 650cc/80hp for 520SROZ and 525SROZ; up to 900cc/110hp for 530SROZ; up to 1000cc/120hp for 630SRO
Available colors: gold
Tensile strength: 8400 lbs. for 520SROZ and 525SROZ; 9100 lbs. for 530SROZ
RXO Series: The Champions’ Choice - Road racing
When second place isn’t an option, choose an RXO series chain. Its weight-saving design and friction-reducing Quadra-X Ring seals have helped the RXO win numerous national championships. But even if you don’t race, the RXO is an excellent street chain, especially if you’re looking to save weight without compromising durability.
Recommended application: up to 1000cc/120hp for 520RXO; up to 1000cc/150hp for 525RXO; up to 1100cc/150hp for 530RXO
Available colors: gold, chrome
Tensile strength: 8500 lbs. for 520RXO; 9300 lbs. for 525RXO; 9400 lbs. for 530RXO
Zero Stretch Technology available as an option on the 520RXO chain.
RX Series: Non-Sealed for Ultra-Light Weight - Road Racing
Our RX-series chains are designed specifically for racers who need to shave every ounce from their bikes and don’t mind replacing their chains on a regular basis. The RX chains are similar to the RXO line, but RX chains have no O-ring seals, saving up to half-a-pound versus their sealed counterparts.
Recommended application: up to 600cc/120hp for 520RX; up to 750cc/150hp for 530RX
Available colors: gold, chrome
Tensile strength: 8400lbs. for 520RX; 9400 lbs. for 530RX
630MS: Tough Enough for up to 500hp - Drag Racing
The 630MS was specially designed for the “lighter” drag bike. It’s quad-staked, has a tensile strength of 11,880 lbs. and is rated for bikes up to 500hp. The pin diameter is .233", the side plates are .121" on the inside, outside and master.
Recommended application: drag racing up to 500hp
Tensile strength: 11,880 lbs.
530DRZ2: The Pro Stock Racer’s Choice - Drag
Designed in conjunction with Pierre Elliott of Diamond Powersports, the EK 530DRZ is chosen by more top NHRA Pro Stock Bike competitors than any other chain. The reason is simple: When a championship is on the line, you can’t afford a failure. In 2004, Sam Wheeler used the 530DRZ in recording the fastest-ever terminal speed for a two-wheel vehicle: 338.269mph!
Recommended application: drag racing up to 300hp
Tensile strength: 11,500 lbs.
530DRZ, 630SHB and 630SHB-Z are exclusively for drag racing and cannot be used on any street motorcycle.
530DR2: For Sportsman and Streetbike Drag Racing
EK is the acknowledged leader in drag chain technology, and now even streetbike racers can get the EK edge with the 530DR.
Recommended application: drag racing up to 250hp
Available colors: gold
Tensile strength: 10,500 lbs.