In this section...
- 20" front fork build
- Anthem X lower pivot bearings - sizes and replacement
- Building a weight weenie coil spring shock
- Fork rebound adjustment
- Fox Float R Rear Shock - 2010 Model
- Fox Float R revalving for a very light rider
- Fox Float R shock shortening
- Fox RP23 Rear Shock with Boost Valve - 2011 Model
- Frankenforks
- Magura Hugin Rear Shock
- Magura Hugin Rear Shock Bleed Procedure and IFP Depth Setting
- Making your own suspension fork elastomers
- Manitou 1 Sport Fork
- Marzocchi MX Pro Fork
- Modifying 26" fork for 24" wheels
- Mountain bike suspension fork axle to crown measurements
- Real World Cycling Shock Eye Needle Bearing Kit Install on Anthem X
- Revalving the Fox Float RP3
- Rockshox lockout not working
- Rockshox Mag 21 Service
- Rockshox Mag 21 Solo Air Modification
- Rockshox Poploc Adjust Repair
- Rockshox Quadra 5
- Rockshox Reba Race 2007
- Rockshox SID 120mm RLT damper
- Rockshox SID Damping Fluid Leak
- Rockshox SID problem diagnosis
- Rockshox SID Race 2001
- Rockshox SID Race 2009
- Rockshox SID Race 2009/2010 Adding/Removing All Travel Spacer
- Rockshox SID Race 2009/2010 Setup Tips
- Rockshox SID Race Rebound Damper Upgrade
- Rockshox SID Race Service
- Rockshox SID Wheel Not Sitting Straight
- Rockshox SID XX 120mm 2012
FAQs - Suspension
Rockshox Mag 21 Long Travel Modification
After you have disassembled your Mag 21 you will notice that there is a long top out sleeve - cutting down this top out sleeve is what you need to do to increase the travel of this fork:
It's up to you to decide how much you want to take off the top-out sleeve (and accordingly, how much extra travel you will get). However, if you shorten the top out sleeve too much the fork stanchions at the top of their travel may clear the lower bushing. This would be a very bad thing.
I removed about 15mm which bumped the travel of this fork up to around 60mm. I say "about" because travel is dependent on home much pressure you put in the fork, as this compresses the top-out spring (which nowadays would be called the negative spring). More pressure (for a heavier rider) will compress the top-out spring more and lengthen the stroke of the fork.
Top out sleeve before:
Top out sleeve after:
