RE: Zero part number: 22-08055 (40mm Shock)
**Updated - added after-update images**
I needed to spec the correct spring (increased rate) for a 250 lbs rider and found little information about this available online. I first contacted my Zero dealer and they didn't know how to help me so I contacted Zero and the information they finally provided was not useful to the aftermarket spring supplier (Race Tech in this case). I must say that Race Tech was extremely patient with me while I attempted to figure this out. After ordering a lift, some tie-down straps, a spring compressor tool and a heavy vise, I was able to remove the rear shock from the motorcycle and safely remove the spring so I could take measurements with a caliper.
I'm adding here the Race Tech worksheet for specing a spring for the rear suspension (in my case a 2022 Zero FXE):
In my case, these were the parts spec'd by Race Tech:
Item Code Description
SRSP 5818107 RT SK SPR 58.2x178 10.7kg
SPSC B5855N Shock Collar Adapter 58-55
SPSC B5552N Shock Collar Adapter 55-52
SPSC P575516 Shock Collar Spacer 55-52
https://photos.app.goo.gl/yW9mKQyNcfprZSDK9https://photos.app.goo.gl/qQGSG64sHRdRTdT68https://photos.app.goo.gl/CsRVfZVq9Crky3h8Ahttps://photos.app.goo.gl/JtDSnMwSW1fLH2JS8https://photos.app.goo.gl/1tmrgn2KtkuTdaw58https://photos.app.goo.gl/LvSB55fXKdq6CG847Relevant links:
Motorcycle lift from Harbor Freight:
https://www.harborfreight.com/1500-lb-aluminum-atv-motorcycle-lift-63397.htmlTusk spring compressor:
https://www.rockymountainatvmc.com/parts/tusk-motorcycle-shock-spring-compressor-pCaliper from Harbor Freight:
https://www.harborfreight.com/6-in-digital-caliper-63711.htmlVise from Harbor Freight:
https://www.harborfreight.com/4-in-swivel-vise-with-anvil-and-pipe-jaws-57737.htmlAyaport Cam Buckle Tie Down Straps:
https://www.amazon.com/dp/B0B2RL7BBL?psc=1&ref=ppx_yo2ov_dt_b_product_detailsAlso, I used Birchwood Casey cold bluing to tidy up the preload adjustment collar after my ham-handed attempts to adjust the preload. These parts are steel and I think it's a good idea to keep them from rusting.
https://www.birchwoodcasey.com/products/super-blue-liquid-gun-blue-3-oz.html
