20 Most Recent Mongoose 20-Inch Gravity Games BMX Freestyle Bike - Page 6 Questions & Answers

Look on e-bay for comparison. Bikes are a lot like used cars, the area and condition determine value as well as the make and model. Also you might checkout craigslist.org for other bikes like yours

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they're ok

Mongoose is the run of the mill brand on the utilitarian side. They are a perfect step for a kid or an adult getting into biking. All aluminum is great because it is so light weight but that is pretty much the normal material for bikes these days. If you become a serious biker you will find out what you do and do not need by riding a Mongoose.

It should say on the side of the tire "Inflate to -- psi" I would say in the 35-50 psi range.

do u know the brand of the bike?

The master link has an elongated clip on one side of the link. You have to look carefully at every link until you find it. The clip will only be on one side of the chain, so you may have to look at both sides. Put a dot of white paint on one side of the chain so you know when you have looked at the entire length of chain before looking on the other side. If you're lucky, you should find it rather quickly.

replace the cable.

replace the hub with a new one. It requires a special tool that can be obtained by purchasing one online and is cheaper than having a bike shop replace it.

tools needed adjustable wrench, 10mm wrench or 6mm allen wrench. Loosen the fastener on the back of the brake pad. remove it then replace with a new one. Making sure that as you tighten the fastener back you are holding the working surface of the brake pad on the side of the wheel. Pay close attention that the brake pad doesn't touch the tire when the lever is pulled.

change the shifter to the smallest gear, pedal while you shift. Once you get it there check the tightness of the cable that is going to it. If it is loose get a 9 mm combination wrench, loosen the clamp located on the front derailleur at the end of the cable. Pull the cable through the clamp and make the cable tight then tighten down the clamp with your wrench. This should make it go up to the biggest gear now. If it doesn't play with the screws, they are travel limiters.

Line it up by twisting the headset sideways, tighten the bolt head on top. It's either a 13mm end wrench or a 6mm allen wrench.

That serial number is a way for the manufacturer to know when and where it was made, maybe by whom. At any rate this was made in China if it's fairly new. You would have to email the company to get any knowledge on this. Good Luck!

Usually the nut on the rear brake caliper is a 10mm. Loosen the nut and the caliper should spring open. Pull on the cable housing where it touches the caliper and it should pull out of the cable clamp that you loosened to start the process. Pull the cable housing off of the cable. Look at the cable and see if it is rusty. If it is then replace it. There is a good chance that the cable housing is rusty inside of it as well, it's a good idea to replace it too. Go to your favorite bike supply store and get a replacement cable and housing that is longer than the one you removed. When you get back to working on the bike , remove the cable from the housing, if it has an end on both ends of the cable cut the one off that you don't need. Once you have the cable removed from the housing pick up the cable housing, compare it to the original housing and cut the new one the same length as the original. Thread it back into the holders on the bike as the old one was. Now install the cable onto the bicycle. Let the new cable protrude out of the housing, thread it into the cable clamp that you loosened in the beginning, squeeze the caliper together and pull on the cable. Now that you are holding the cable tight with one hand take the 10mm wrench and tighten the clamp. Project finished.

On the right hand side of the crank or oppisite side of the front sprocket should be a 1 1/8 lock nut remove lock nut an washer should be an ajustable race with two holes known as a spanner race tighten up the race reinstall washer an lock nut tourqe down lock nut rotate crank making sure bearings dont drag an done If you need further help, I’m available over the phone at https://www.6ya.com/expert/robert_c7b5aba9012a13b2