MTB Oval chainring for 10, 11 and 12spd Leonardi Factory Track

Oval chainrings allow you improve performance and better leverage force minimizing the deadlock when cranks are vertical. The approximate normal chainring equivalence is 4 teeth less in the flattened area and 2 more in the normal area. For example, a Leonardi Track 32-tooth is equivalent to a 34-28 depending on the point of pedalling.

Leonardi Factory Track chainrings also have special toothed narrow-wide for use as single chainring in 1x10spd and 1x11spd transmissions, and prevent it getting out the chain. They are not valid for transmissions of various chainrings.

To know the necessary BCD, usually come indicated on the chainrings you currently wear. If you can't find it, measure the distance from center to center between two opposite holes (non-consecutive) screws of the chainring. Below you can see a little guide with cranks models and their BCD.

Features:

• For transmissions of one chainring (1x10spd or 1x11spd).
• Narrow-wide teeth prevent it getting out the chain.
• For chains of 10 and 11 speeds
• Approx weight: 32gr (depends on the model and number of teeth).

BCD guide:

• 104BCD: Most of Shimano and others (ie. M785, M770, T781,...)
• 96BCD: Shimano FC-M782, FC-M672, FC-M622 and FC-M612
• 96BCD Asymmetric: Shimano XT M8000, SLX M7000 and MT700 for 1X and 2X only.
• 96BCD Asymmetric XTR: Shimano XTR M9000 / M9020
• 94BCD: SRAM X01, X1, GX, NX
• 76BCD: SRAM XX1