Just did the long travel mod on a Mag 21 that I use on a 24" full suspension kid's bike. This is a great fork for a light rider. Bumping the travel up to around 60mm has made it even better. More details, pics etc. on the mod and disassembly here.
I'm still amazed how well this fork works given its age and how perfect the stanchions and internals are and how easy with oil weights and heights and air pressure it is to dial in for a light rider. It's had a hard life, including over 5 years on the front of a bike courier's ride. It was never apart (or serviced) until I rescued it from a dumpster in a mate's front yard. Since then, its had a fresh coat of paint, decals, mods to use on 24" wheels, a yearly service and now a long travel mod.
Still going strong and my daughter loves it! Truly vintage and classic.
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