Upgrade or replacement rear derailleur dropouts; stiffer and more rigid to improve shifting performance
CNC machined from solid 6061 aluminium to exact tolerances
Stiffer than any original equipment hanger which improves shifting performance
Still breaks before your frame does to perform its main function
Direct replacement for original equipment with guaranteed fit
Black anodised for extra scratch and damage resistance
Laser etched for easy part identification
Note: WMD303 is for M12x1 single lead threaded axles. Not for use with the stock Speed Release axle found on the 2019+ SystemSix, which uses a double lead thread. Please order WMD399 for double lead thread
Our delivery options may vary. View what's currently available at checkout.
CLICK & COLLECT: Free Have your item ready to collect in-store for free. Most items can be collected from 2pm the following day. To avoid disappointment, please wait until you have heard from your selected store prior to travelling.
STANDARD DELIVERY: £5.95 Delivered in 2-3 working days. Free for orders over £75. Please note, sale items or at busy periods, orders may take an additional 48 hours to be delivered.
NEXT BUSINESS DAY: £9.95 Order before 1pm Monday to Thursday. Orders placed before 1pm Friday will be delivered Monday.
RETURNS: We hope you’re happy with your order. If you’re not perfectly satisfied, you may return your item(s) within 30 days. Item(s) must be returned unused and in its original condition and packaging. Please read our full returns policy here.
Note exclusions apply. View our full DELIVERY and RETURNS policy.