Regina Chains
Comes in Three Qualities

Reinforced, Non O-Ring Chain, Heavy Duty
Chain has gold outer plates, grey rollers, pre-stretched- see specs below

W-roller link width, D-roller diameter, T1-pin link plate thickness, T2-roller link plate thickness
B-weight, P-pitch, L-pin length, R-average tensile strength

Professional, Non O-Ring, Lightest Possible
Chain has gold outer plates, grey rollers, pre-stretched- see specs below

W-roller link width, D-roller diameter, T1-pin link plate thickness, T2-roller link plate thickness
B-weight, P-pitch, L-pin length, R-average tensile strength
 

520 Quad Chain Z-Ring
520 quad Chains have "gold outer plates. A tough elastic Z-ring seals in special grease to provide increase wear life over standard sealed chains. The Z-rings also keep out dirt and water, chain construction features high chrome - nickel alloy pins, solid bushings, shot peened solid rollers and plates for increased fatigue strength. Chains are prestressed to provide quick break in for minimal adjustments.
 

O-Ring, Top Quality
Chain has gold outer plates, copper rollers, pre-stretched- see specs below

W-roller link width, D-roller diameter, T1-pin link plate thickness, T2-roller link plate thickness
B-weight, P-pitch, L-pin length, R-average tensile strength
 

EK Chains
Best seller chain line which features solid rollers, constructed with soft-peened and pre-stretched components for better performance and fewer adjustments. All drive chains include a connecting link. Comes in three styles.

Sport 520 SRX Quadra X-Ring Chain
The best chain available for ATV/Offroad
Offers 50-100% longer life that O-Rings, while reducing friction up to 50%. Ultra-durable Quadra X-ring material resists premature failure, ensuring reliable sealing throughout the life of the chain. With tensile strength of 8400#. Developed for most ATV & off road bikes up to 600cc plus street units up to 600cc.
 

Sport 520 SRO O-Ring Chain
520 O-Ring chain is equipped with solid bushings, a tensile strength of 7400# which can be used on ATV/Dirt Bikes up to 250cc street units up to 400cc with a maximum of 40HP.

Sport Series, Non Sealed Chain, Standard
Features two-point pin riveting and formed bushings. Recommended for ATV's, dirt bikes and motorcycles up to 125cc. All chains can be cut to length with connecting links provided with each chain.