Top quality X-ring chain. X-ring is better than O-ring because the friction is less, and it resists water better. 116 links is long enough for all of our F650GS sprocket combinations. Normal F650GS length is 112 Links (count: 112 pins on an installed chain). Kit includes rivet link. Professional installation recommended for safety and longevity of the precision high quality DID chain. This DID chain is supplied with a Rivet style masterlink . Tool RK-4060 is required to install the rivet-link. A clip style master link is available for purchase separately.
We only carry TWO brands of chain, and they are both top-quality. Here is D.I.D.'s description of their product:
D.I.D.'s exclusive SDH pin treatment is the secret behind the superior performance of 520ERT2 race chain. SDH hi-tech pin treatment forms an extremely hard chromium carbide layer on the pins surface while maintaining a soft inner core. SDH pins have extreme impact strength while maintaining outstanding shock absorption. D.I.D.'s new ERT2 is one of the lightest and strongest chains on the market.
D.I.D.'s patented X'ring construction reduces friction by twisting between the side plates instead of being squashed. Normal O'rings and other maker's modified O'rings have squashed points that increase friction. The twisting action of the X'ring disperses the pressure and minimizes power loss. D.I.D. has redesigned the shape of the X'ring to maximize wear resistance.
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