Stumpjumper LT link

This link is compatible with the Stumpjumper EVO, Stumpjumper, and Stumpjumper ST.

Our link for the current Stumpjumper generation gives the suspension 70% more progression as well as a 5 mm travel increase (with the stock shock stroke). This allows the bike to be run with a stiff enough spring to prevent harsh bottom outs without having to compromise on small bump sensitivity or ride height. For riders on air shocks fewer volume spacers can be used to achieve the same bottom out resistance, which opens up a wider usable range for those dealing with lots of volume spacers as well. As a result, the suspension that can handle larger hits better than ever while maintaining loads of traction in rough terrain. The Stumpjumper LT link truly maximizes the bike’s descending capabilities.

The link maintains the stock ride height of the bike. In doing so, it leaves the Stumpjumper’s pedaling performance unaffected. This means all the added descending performance doesn’t come at a cost when it comes to pedaling back up.

The Stumpjumper link opens up more room for tuning as well. By making the suspension no longer reliant on things like damping, volume spacers, or progressive springs to avoid bottom outs have a larger usable range since they don’t need to be kept around a certain value for bottom outs. For example compression damping can be backed off to make the shock more active over small bumps since it no longer has to be relied on to keep the bike from blowing through its travel.


Stumpjumper leverage curve
  • Compatible with: Stumpjumper EVO, Stumpjumper, and Stumpjumper ST
  • 145 mm of travel with stock 210×50 mm shock for 29″ bikes
  • 160 mm of travel with stock 210×52.5 mm shock for 27.5″ bikes
  • 70% more progressive than stock link
  • Keeps geometry identical to stock geometry
  • Sealed Enduro MAX bearings
  • CNC’d out of 6061-T6 Aluminum
  • Colors: Black, Silver, blue

Complete Travel Specifications

Shock size/Wheel size29″27.5″
210 mm x 50 mm145 mm153 mm
210 mm x 52.5 mm153 mm160 mm
210 mm x 55 mm160 mm167 mm
190 mm x 42.5 mm (SJ ST)125 mm135 mm

We are currently working on a a table of all frame and shock combos that will provide more detail on shock size compatibility and travel amounts. Most Stumpjumper models can fit up to a 210×55 shock in high, but in low some are limited to 52.5. Regardless of compatibility we always recommend cycling your suspension with no spring or air pressure to make sure all clearances are good before riding.

Set Up FAQs

This depends on what you’re mainly riding, but both work really well. For trails with lots of rock and roots we recommend the coil set up as it will smooth these out really well and for trails with lots of big hits the air will always feel more bottomless. Even with volume spacers the air shock does not feel harsh at the end of travel.

Using the spring rate listed below will provide more bottom out resistance than the stock link. The rates are calculated for 30% sag so you could go up to a stiffer spring without making it sit too high if you want even more

The recommended spring rate listed below will also provide more small bump sensitivity than the stock link if the damping is properly adjusted, but if you would like more go down 50 lbs in spring rate. We don’t recommend much lower than this because it will begin to make the bike sit lower in its travel than it should for pedaling. With the Evo this can make pedal strikes much more frequent since it has such a low BB. If you are shuttling or riding lifts you can go as low as you’re comfortable with though.

Any Stumpjumper (standard, ST, or Evo) that’s 2019 or newer is compatible with the link. If you have a 2018 find your bike in Specialized’s bike archive and make sure it’s frame is the same style as this one here https://www.specialized.com/us/en/mens-s-works-stumpjumper-29/p/154955?color=253538-154955. Specialized switched Stumpjumper generations that year and consider both to be 2018 model years so make sure it is the generation of frame that matches that.


Recommended Spring Rates

Rider WieghtSpring RatePreload
120 lbs (54.4 kg)4001 turn
140 lbs (63.5 kg)450 1 turn
160 lbs (72.6 kg)525 1 turn
180 lbs (81.8 kg)600 1 turn
200 lbs (90.7 kg)650 1 turn
220 lbs (99.8 kg)700 1 turn

*All spring rates are calculated for 30% sag assuming a 64% rear weight bias.