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Submitted by
spdbmp66
a Racer
from Covington, KYDate Reviewed: October 11, 2009
Strengths: Steers straight, no flexWeaknesses: short travelBottom Line: I Love this fork. I've been riding it off and on since '92 It rocked then and now!
Favorite Trail: Idlewild
Duration Product Used: More than 3 years
Purchased At: Mongomery Cyclery
Similar Products Used: Manitou 1
Bike Setup: GT Team Avalanche
Overall Rating: Value Rating:
Submitted by
Glen
a Weekend Warrior
from SanDiego, CA USADate Reviewed: July 24, 2005
Strengths: This was the coolest shock out there at the time and it worked good, never had any porblems with it. Yeah the travel was short, but it rode straight and true like a rigid fork with the benefit of some big bump absorption. Made my aluminum hard tail Scott ride alot nicer than with the stock steel fork it came with :).Weaknesses: Short travel, high price but it was the only thing like it so I guess high price could be expected.Bottom Line: I was quite happy with the Mag 20 and never had a problem with it. I rode all sorts of desert and forest trails and fire roads with it and the fork was great for that. Probably not something I'd want for doing alot of jumping or downhill, but it's still a good old fork. I imagine a good used one would be pretty cheap these days, so I might find one or a Mag 21 to replace the 1" threaded steer rigid fork on the cheapie bike I've been riding for years since the Scott was stolen. I still have the old air pump for the Mag 20 too :).
Favorite Trail: any that I can ride
Duration Product Used: 2 Years
Price Paid:
$350.00
Purchased At: a mail-order suspension place out in TN or KY if I remember right, bought back new back in '92
Similar Products Used: none, first and only suspension fork I've ever owned. Have ridden a few nice bikes my friends had with upside down forks, rear suspension, etc (big time bikes for back in those days).
Bike Setup: '91 Scott Limited aluminum hard tail, built from ground up with lots of good components for those days. The Mag 20 was the crowning touch on the nicest bike I'd had. Rode it for 2 years till the bike was stolen from my garage in '94 and would probably still be riding it today if it hadn't been stolen.
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Submitted by
ratman
a Weekend Warrior
from dfw, txDate Reviewed: June 18, 2005
Strengths: super adjustable, only good fork available nowadays with a 1" steerer tube, 3.1 lbsWeaknesses: 40-something mm of travel, stiction from hell, flexy. i heard forks with SN#'s 27266 through 158841 have fork crown recalls.Bottom Line: i got these off ebay from some guy saying they were mag21s and in perfect condition, but they were actually mag20s with blown seals. After reseating the seals and lubing and adjusting air pressure, holy freakin crap these feel GOOD. yup, nothing compares to an air fork, even if the travel is only 45 mm. if you have a 1" head tube and are looking to upgrade to suspension, go with the MAG series. I built this bike for my girlfriend and she is pretty light, so if you are <130 lbs, run low pressure with 40mm of 2.5wt oil and remove the boots if you only ride dry conditions. If you are looking for replacement bushings or the LT kit, yo uare screwed b/c no one makes it anymore. www.enduroseals.com makes a MAG seal kit for all the mag series. 4 chilis only because I'm used to longer travel.
Favorite Trail: UTA campus
Duration Product Used: Less than 1 month
Price Paid:
$75.00
Purchased At: ebay
Bike Setup: blue Cannondale SM500 3.0 aluminum, w/ suntour xce and xc-1 7 spd pod shifters, ritchey wheels & tires, serfas dual denisty gel, ROCKSHOX MAG20
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Submitted by
Rick
a Cross Country Rider
from Danbury, CT USADate Reviewed: December 30, 2003
Strengths: Simple, bulletproof, light, strongWeaknesses: Not even close to plushBottom Line: Bought these bad boys way back in '92. Used home made slider covers and wore our the seals in a season. My friend F-Tom at the "Bikes-A-Mess" got me an accordian style rubber cover and things have been happy since. A bunch of years ago, MTN Bike Action did an article on tuning/hopping up your Mag-20's and it made a world of difference. I can't seem to kill these forks! They have survived 3 frames, and countless hits. They are for big hits only, I don't think the word "Plush" was invented yet when these forks were born. Upped to an aluminum crown and steerer when I put 'em on the Pulse. Amazing thing is... they are over 10 years old and still going strong, go figure!
Favorite Trail: Steep Rock/Hidden Valley :-<
Duration Product Used: More than 3 years
Price Paid:
$350.00
Purchased At: BikeExpress
Similar Products Used: none
Bike Setup: Klein Pulse Team, RS Mag 20's, XTR, Joy Stix, Ringle SuperBubba & Super 8, Sun RinoLites, Velociraptor F&R, Bontrager Ti saddle, Scott LF-1 bars, Control Tech stem. (My bike's lighter than your bike, nah nah na nah nah)
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Submitted by
Don
a Weekend Warrior
from Copperopolis, CADate Reviewed: February 18, 2003
Strengths: This shock has lasted forever. I've riden it every weekend since 1992. Once you figure out your oil weight and height, you only have to play with the air pressure.Weaknesses: needs more travel.Bottom Line: Love this shock so much I'm putting a Mag 21 on a Klein Mantra I just bought on e-bay. The Mag 20 is great. I've rebuilt this shock 3 times since '92. This shock has a lot of hard miles on it, and other than checking the air pressure every ride, I have to do nothing to this shock. Hope my new Mag 21 is as good of a shock.
Favorite Trail: any thing I can ride now
Duration Product Used: More than 3 years
Purchased At: came with bike
Similar Products Used: none, first and only shock i've owned up till now.
Bike Setup: old Univega with above bar thumb shifters and 21 speeds. pull star straight pull spokes and some no name rims. Big agressive tires and a troll on the handle bar.
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Submitted by
Kel
a Cross Country Rider
from CanadaDate Reviewed: March 22, 2002
Strengths: This has been a great fork, has stood the test of time through 3 rebuilds and a 2.5 inch travel kit. Its still light enough to compete with the new ones!!Weaknesses: The seals leak and you have to adjust the pressure once in a while.Bottom Line: One of the finest....a true classic
Favorite Trail: Pembina Valley
Duration Product Used: More than 3 years
Price Paid:
$250.00
Similar Products Used: Judy, Indy SL, z1
Bike Setup: Norco Rampage XT/XTR!GO CANADA!!!
Overall Rating: Value Rating:
Submitted by
kel cov
a Cross Country Rider
from nyDate Reviewed: November 6, 2001
Strengths: light,cheap,and its the next best thing to a rigid (perfect for NYC)Weaknesses: seals are crap and cant find parts to rebuild (Fossle)Bottom Line: Ode' to the good ol' days..I still wear hiking boots with toe clips and florescent socks
Duration Product Used: More than 3 years
Price Paid:
$60.00
Purchased At: open road (Syracuse
Similar Products Used: specialized RS1 judy sl and bed springs.
Bike Setup: commuter style (slicks)
Overall Rating: Value Rating:
Submitted by
Juny Binamira
a Weekend Warrior
from Tagbilaran, Bohol, PhilippinesDate Reviewed: April 23, 2000
Strengths: Lightweight, low maintenanceWeaknesses: short travel, tends to leak air pressure over time - I now pump it up every week.Bottom Line: I live way out in the sticks (Bohol, southern Philippines)
and though I could've afforded a SID a year back when I was
shopping for a fork, the best my local bike shop could find
me was this seven-year old Rock Shox Mag-20. I've been
quite happy with it though - it weighs only 3.1 lbs, which is still quite competitive with current high-end models.
Though it's got quite a bit of stiction, damping is good.
Sure could use a little more travel though.
I'm thinking of getting the SID SL for my next bike - a
2000 Specialized FSR XC frame that I'll build up.
Favorite Trail: between Maribojoc and Loon, Bohol
Duration Product Used: 1 Year
Similar Products Used: none
Bike Setup: '94 GT timberline (18")
Overall Rating:
Submitted by
James
a Racer
from Austin TXDate Reviewed: January 6, 2000
Strengths:
Its a suspension fork in a land of rigid forks(in 92).Weaknesses:
travelBottom Line: Man this fork was the sh*t in 92. Especially compared to that original Manitou with 1 1/4 in travel.
Favorite Trail:
Flat Creek
Duration Product Used:
2 Years
Similar Products Used:
Mag 21LT
97 Judy XC
98 Manitou Ti-SX
Bike Setup:
98 M2S-Works
Overall Rating:
Submitted by
Bike Master Mike
a Racer
from Canton, MIDate Reviewed: October 31, 1999
Strengths:
Good Damping
Adjustable Spring Rate
Infinitely adjustable preloadWeaknesses:
Air caps leakedBottom Line: This was my first shock. It had magnesium lower legs that oxidized easily in small scratches on the lower legs. The upper legs were steel. The top caps were aluminum and the fork had 48 mm of travel. The mag 20 was Rock Shox 2nd fork, after the RS1. Their web site doesnt even mention this fork! Those bastards. There was also a Mag 30 model and it was similar to the 20, but it didnt have adjustable damping. The next forks were the Mag 21 and Mag 10. With the negative springs on the 1994 model Mag 21, this became my all time favorite fork. Its more adjustable that anything. It also had annodized aluminum upper legs and the lowers had a much better coating or perhaps a different alloy of magnesium. The lower legs on my 21s have never corroded like the 20s did. If you still ride a MAG 20, you rock dude.
Favorite Trail:
Island Lake
Duration Product Used:
more than 3 years
Similar Products Used:
Mag 21 LT
Manitou FS
Judy XC
Judy XL
Indy SL LT
Bike Setup:
1991 Giant ATX 780, Full XT components
1998 Haro-fork was on this bike when it was stolen
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Reviews 1 - 10 (10 Reviews Total)
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