20 Most Recent Mongoose MGX Maxim Dual Suspension Mountain Bicycle Questions & Answers


It sounds like your spokes are loose. Unless you have experience in tightening spokes you need to take the bike or wheel to a dealer. It is very easy to get the wheel wrapped if you have never done this before.

Mongoose MGX... | Answered on Apr 03, 2015


If I remember right the threads on the pedals are left handed, which means you turn in opposite direction than normal. then you unscrew the nut on the crank. The race for the bearings will have a slot. Use a screwdriver to turn it the normal way. Take out that bearing. Then move crank a little way to the other side to get bearing out from the inside race. Then you should be able to pull crank through.
On the newer bikes, the crank can be dismantled on each side so all you have is a shaft to remove. You still remove the race and bearings the same way.

Mongoose MGX... | Answered on Mar 06, 2015


They don't sell to the general public. Go to the store where you bought it and ask to order from them.

Mongoose MGX... | Answered on Jun 25, 2014


Replacing the cassette involves specialized tools. Your best bet is to visit a bike shop (a *shop* is where the employees ride and know bikes, rather than a *store* that just sells) and talk with them. They'll show you what you need, and describe the procedure if you want to spend the money on the tools.

Mongoose MGX... | Answered on May 08, 2011


Take the bike to your local bike shop, they will be able to assess what the bike will need. Most likely though there is a good reason that it was in the dumpster and the cost will be much higher than you want to spend.

Mongoose MGX... | Answered on Apr 19, 2011


No one sells one side. Get the whole crankset. Match the original crankset exactly or you may have to get a whole new bottom bracket to macth the chainline because of different horizontal spacing. Special tools are required, too. A bike shop would be glad to choose the replacement and swap it out.

http://www.parktool.com/blog/repair-help/categories/crank-service

Ask them about the pedals.

Mongoose MGX... | Answered on Mar 06, 2011


There are no published weights, which would not be accurate anyway.

You have to get ahold of one and weigh it, that is the only way to know.

Mongoose MGX... | Answered on Jan 08, 2011


Sorry to inform you, but there is no adjustments available for the forks that come with your bike. Adjustable forks (just the fork) start in around $250-.

On the positive side since there is not adjustment capability the fork does not need regular servicing like the adjustable forks.

Mongoose MGX... | Answered on Dec 01, 2010


if by the flywheel your referring to the back gear cluster than its probably time to get it replaced around 30$ should do it if you dont have the tool to do it a shop call will be needed but take this advise when you drive on the same gears for an extended amount of time they stretch and wear into themselves making any new additions to the drivetrain useless meaning you might have to replace the whole drivetrain ........i myself have gotten caught with this and i had to pay out 350$ as i ride a highend bike so my man get your cluster fixed then have patience as sometimes it wont fit your chain depending on the age of it if and when you fix this shops offer chain checking for free and they have a tool to measure the stretch% ok hope this helps you...............ps all the bike specific tools needed to do these repairs are often the same price as 1 shop call that required them ok little secret

Mongoose MGX... | Answered on Nov 17, 2010


You can only raise a quill stem os far safely. Loosen the vertical center bolt that's in line with the steerer tube a few turns and then tap down on it with a block of wood or rubber mallet to unseat it. The stem should be loose enough to turn independently of the front wheel. You can also raise it somewhat, but look carefully for the "maximum height" or equivalent markings etched into the stem body. Don't expose any more stem than up to that line. Line up your handlebars with the front wheel and securely tighten that bolt. It should be tight enough to vigorously resist independent rotation when you hold the front wheel bewteen your knees and attempt to turn the handlebars.

If it's a new-style threadless type stem, the maximum height was determined when they assembled the bike because they had to cut the steerer tube to be below the top edge of the stem. Go to a Bike Shop and have them replace the stem with one that has a higher rise or shorter reach.

Mongoose MGX... | Answered on Aug 22, 2010


Is the cable broken? You have to be on the bike and pedaling to get them to move, They are pretty simple mechanical things, the only that can go wrong is a broken cable, and maybe out of range stops. It will cause the chain to fall off one end or the other, There are little screws that stop it from going too far. Thumb shifter too tight? Check it out.

Mongoose MGX... | Answered on Jul 06, 2010


It is not advisable to staighten bent bars, as they may fracture and cause a fall.
Are they bent or just turned and not facing straight

Mongoose MGX... | Answered on Jun 04, 2010

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