Item: 188170

SRAM X4 Rear Derailleur


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RRP £19.99 *

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  • Description
  • Specification
  • Reviews
  • Help & Advice
  • Price Match
  • Buying Options

    The SRAM X4 Derailleur is a lightweight, 8-speed piece of kit that will improve your shifting performance no end.


    • Di.R.T: Direct Route Technology
    • 8 speed shifitng
    • Long Cage construction
    • Lightweight
  • Material: Steel
    Speed Type: 8 Speed
    Type: Rear Derailleurs
    Weight: 280g
  • Rated 4.6 out of 5 by 11 reviewers.
    Rated 5 out of 5 by SRAM or Shimano? My experience has been that at the budget end of their respective ranges, SRAM derailleurs are longer lasting than Shimano. The pivots seem to have more slack from new and wear quicker on Shimano leading to the guide/jockey wheels going out of alignment to the cassette and chainset, causing chatter and poor gear changes. The SRAM X4 has served me very well and so I am replacing with the same. Will likely move to SRAM in the future for other bikes. 01 August 2016
    Rated 5 out of 5 by Excellent replacement for my broken part I broke my rear derailleur and this was the perfect replacement for it 29 January 2015
    Rated 4 out of 5 by Replacement on Crossfire 3 I mangaged to munch up the derailleur on my Crossfire 3, so brought this replacement. Noatably, this is the long arm version , but it worked straight away when fitted. Once on gear was aligned, it shifted nicely to all the others. Don't forget to get a rear mech hanger if you've bent it too! 25 January 2015
    Rated 5 out of 5 by Great value. needed to replace the one on my Carrera this one was easy to fit and set up, gear change is really smooth and precise. great value for the money. 08 March 2014
    Rated 4 out of 5 by easy Nice and easy to fit. Went on adjusted and back on the road just like that 04 February 2014
    Rated 5 out of 5 by SRAM X4 Rear Derailleur Excellent replacement for an existing SRAM SX4 model that was originally fitted to a friend's bike (Carrera Crossfire 2). In tandem with a replacement gear hanger (Type A from Halfords), an 8 speed KMC chain and a Shimano 8 speed cassette, the bike's shifting has been transformed. The derailleur is sturdy and easy to fit. Excellent instructions accompany the product with no prior knowledge really required. Would definitely recommend. Not the lightest, but for the price, and excellent piece of kit. 19 September 2013
    Rated 5 out of 5 by Good piece of kit I purchased this as my gears were not changing smoothly and after tweaking my current derailleur I was getting not where. I purchased this and it was for the money has done the job. My gears still do not changed 100% perfect but I think I need new gear shifters also.. Good product, would recommend 16 September 2013
    • 2016-10-27 T11:36:27.436-05:00
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  • 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.

SRAM Gears, Drivetrain & Cables

SRAM X4 Rear Derailleur

£18 The SRAM X4 Derailleur combines the best elements of SRAM shifting at a price that`ll wow you.