Leverage Curves

Current list of Bikes

Last update January 2025

Current list of E-Bikes

Last update July 2024

Current list of Progressive
(17% or more) Linkage bikes that are coil Compatible

Current list of Progressive
(25% or more) Linkage bikes that are coil Compatible

Current list of Bikes lower Leverage
(2.45 to 1) average leverage for heavier riders


Progressive Ending	Progressive Linear High Leverage Progressive Linear	Progressive Beginning	Progressive Beginning Linear Ending
Best for Coil Travel can be limited with Air	Best for Coil Works for Air with Large Volume Cans	Best for Coil Spring Rate Issues for Heavier Riders	Best with Coil with Botttom-out control Compromise for Coil/Air


Progressive / Regressive	Regressive / Progressive	Low Leverage Progressive	High Leverage Linear
Best with Air Coil with Extra Botttom-out	Compromise for Coil/Air Best for Pedaling	Compromise for Coil/Air Best for Pedaling Best Heavier Riders	Best with Air Pressure to High for Heavier Riders

Low Leverage Linear	Low Leverage Ending Regressive
Best with Air Coil with Extra Botttom-out Limited	Best with Air Will not Work with coil

What is involved in getting your suspension modified, tuned and setup when you place an order, call or e-mail us?

1. When you call or e-mail us we will recommend the best shock and fork choice and create a worksheet for your bike model and rider info.
2. Our Expert System looks up and cross references in our database and calculates the spring rates (air shocks where needed) needed for your bikes leverage, travel and rider info.
3. Your custom modification parts and springs are selected from our inventory and added to the customer data sheet.
4. We send quotes for our recommendations along with the customer data sheet with bike specifications, and based on the customers choices generate an invoice for down payment to get the customer in our queue.
5. Our AI generated valving and tuning data is determined by comparing our previous customer data, database and test data for that bike to recommend the best valving and setup data choice, which we tailor to the specific requirements provided and discuss the final choice with the customer.
6. Our office manager will estimate based on our current backlog and work with you as to when your suspension can be shipped to us to begin the work.
7. Follow up emails are incorporated into the work orders to keep any changes up to date on your work sheet, as changes are generally easy to incorporate.
8. Your work is generally completed within the week it is sent to us, any issues found or that might arise will be discussed with the customer and can be corrected if needed.
9. The completed work is shipped with the components set to the starting recommended settings along with a setup sheet for your records.
10. Follow up calls and e-mails from the customer to help with installation or setup are handled by personal phone calls when possible and e-mail if calling is inconvenient.