Shimano RD-M985 XTR 10 Speed Shadow + Design Rear Derailleur


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RRP £139.99 *

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  • Description
  • Specification
  • Reviews
  • Help & Advice
  • Price Match
  • Buying Options
  • Shimano RD-M985 XTR 10-Speed Shadow + Design Rear Derailleur, Short

    The Shimano RD-M985 XTR 10-Speed Shadow + Design Rear Derailleur offers you the smoothest and slickest way to shift gears. With its low-profile design making it less prone to damage and a chain stabilisation switch to help reduce chain bounce on rougher terrain, this derailleur is tailor made for the Dyna-Sys 10-speed.

    Shimano RD-M985 XTR 10-Speed Shadow + Design Rear Derailleur, Short Extra Info:

    • Compatible with the Dyna-Sys 10-speed only.
    • Damage is reduced from side trails by the low-profile design.
    • Chain stabilising switch reduces chain bounce on rough terrain.
    • Improved cable pull ratio provides a more accurate shift action.
    • Single tension spring prevents contact with the chainstay resulting in a slient ride.
  • Discipline: MTB
    Material: Carbon Fibre
    Type: Rear Derailleurs
    Weight: 210g
  • Halfords Price Match

    Here at Halfords we always want to make sure we're offering you a first class service and products at competitive prices.

    To ensure we keep our Price Promise to not be beaten on cost, we monitor the prices offered by our competitors daily and adjust our own pricing accordingly.

    So, What's Halfords Price Guarantee?

    If you find a cheaper price we'll match it, and if you find it after you've purchased from us we'll refund the difference within 7 days of receipt of your goods.

    Simply take a print out of the competitor's online price into any Halfords store, ensuring, date and price are shown and we will match the competitor price if within policy.

    Terms & Conditions

    • The competitor's item must be identical (colour, size etc)
    • The competitor's item must be in stock at the time of match
    • The competitor's price must include delivery
    • The competitors price must be publically advertised online and cannot include any membership/personal discounts
    • We cannot match bulk promotional offers such as buy one get one free
    • The competitor must be based in the UK and sell direct to customers (no auction or marketplace retailers)
    • No other promotional offers or vouchers can be used on top of a price match
    • We will match within 7 days of receipt of purchase
    • If purchased from store the match must be from a store within 20 miles radius
    • We will match in store if our online price is lower than our store price
    • We will not match against clearance, closing down sales or specialist retailers such as market stalls.
  • You can buy this product from one of our carefully selected Approved Partners. The full list of options available are below. Simply add your chosen option to your basket and proceed to checkout when you're ready.

    You can purchase products supplied by Halfords and selected other suppliers on

    Checkout is always via and all payment will be taken via In checkout the products will be split into separate deliveries for each supplier.

    Showing 1 - X of our buying options
    Price Seller Info Purchase

Some of the parts we sell here at Halfords have been reconditioned. These will carry a Refundable Deposit or an extra surcharge amount. When you add one of these reconditioned items to your basket, we'll add this extra cost automatically.

Once you've sent us your old item we'll check it over, and then refund you the full surcharge as long as everything is ok.

Before you return your old unit please make sure it's in re-serviceable condition. So if you're returning caliper casings, you'll need to double check they aren't badly damaged or broken. If the part you've sent is found to be unserviceable, we reserve the right not to refund the surcharge.

Please note that if you're returning your old unit to our National Returns Centre then this will be at your own expense.

Shimano Gears, Drivetrain & Cables

Shimano RD-M985 XTR 10 Speed Shadow + Design Rear Derailleur

£114.99 The Shimano RD-M985 XTR 10-Speed Shadow + Design Rear Derailleur gives you a smooth performance.