Street Twin, Cup, Street Scrambler DID ZVMx (ZVM2) 525-102L Extreme Heavy Duty X-Ring Gold Chain.& Sprockets Upgrade Kit. +Free Chain Tool! KM500 Style Chain Tool / Heavy Duty Chain Rivet Splitter & Riveter [All sizes DID-SSS-Tsubaki] FREE with this chain! Limited Offer/While Stocks Last!
Owners wishing to upgrade the inlet cam to a higher lift Bonneville spec' camshaft may wish to consider beefing up the driveline. Triumph never intended the Street 900 twins to handle 70BHP. The driveline is a meager 520 (Width) and under spec' for increased BHP/torque. Our kit brings the Street 900 twins upto Bonneville/Thruxton T120 spec' Easily capable of handling the increase in power & torque! Alternative gear ratios are available to suit individual owners requirement.
In our opinion D.I.D ZVMX chains are the best chains on the market and are fitted to most bikes from new.
DID's ZVM-X Chain uses patented X2-ring seals. Like O-rings, X-rings function to seal in lubrication and keep dirt out, and for the ZVM range the X-rings have been redesigned to offer even greater wear resistance - the best in the DID range - and even less friction than DID's original X-Rings.
Where the cross section of an O-ring is circular, the cross section of an X-ring is 'X' or cross shaped. This gives the seal additional contact points compared to the O ring, offering superior sealing and protection against dirt and grit getting stuck under the seal.
In addition, when under pressure an O-ring becomes squashed and causes friction. An X-ring, when under pressure, diverts this pressure by twisting instead, so an X-ring decreases friction between side plates and reduces power loss by 50% of any other type O-ring chain.
DID's X-rings have 40% greater wear resistance than their regular X-ring chains (the VX range) and 40 times that of a DID standard chain; this means more resistance to stretching, bowing and warping and smoother handling. With the proper maintenance an X2-ring chain will last longer than any O-ring or unsealed chain.
Picture for illustration purposes only. Chains come with links suitable for the purpose of the chain.