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FAQ
What makes KMC Chains so strong and durable?

With scientifically-proven and tested technology, KMC Chain offers premium chains coated with special solutions such as our world-renowned RustBuster treatment of zinc and chrome. We also construct ground-breaking chains inside-out with advances such as our Sealed Locking technology, which preserves grease inside the chain to prolong its life.

Does KMC has special MTB chains for 10-speed?

KMC makes the chains suitable for all disciplines, so they can be used in MTB and Race. Our team Vacansoleil (Road Race), Julie Bresset (MTB Olympic gold) and Sabine Spitz (MTB Olympic Silver) all use the same chain: X10SL.

Under normal riding condition, which part wears out faster? Chainring, freewheel or chain?

If you ride the bike under normal condition and you change different gears for shifting not only using certain gear during riding, chain will be the first one to wear out, and then freewheel. Chainring usually is the last one to show the sign of being worn out.

How does chain wear out?

Due to stretch and engagement running force with freewheel, inner link touches sprocket teeth. Thus, the inner link wears out. Usually there is no wear on outer links.

How to prevent unnecessary chain wear

To obtain the maximum mileage from your drivetrain irrespective of the type of chain, simply:
- Follow our maintenance tips. (click to link the instruction video)
- When shifting, try to keep the chain in as straight a line as possible between chain wheel and cassette (i.e. do not use the extreme positions like the smallest chainring and the smallest sprocket, or the largest chainring and the largest sprocket.)
- When shifting, try to anticipate a situation (i.e. when going uphill, shift up early in order to prevent excess force on the chain when having to change gear.)
- Before stopping, shift to smaller chainring to avoid having to shift from stand-still.

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