The difference between rider Merida (very old knight) and rider lx.

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If I remember correctly, the original price of Merida's knight SX should be 798 yuan.

Knight SX is an upgraded version of Knight. In fact, the configuration is similar and the price is similar. There is basically no difference between the front shock absorber and the seat ~

In addition, I will find out the configuration of knight SX for you:

Merida Knight Aluminum Alloy Large Diameter Frame

Deep blue, red, red black, silver blue

Merida aluminium alloy handlebar

Merida aluminum alloy Bali

Merida Bateau

27.2 aluminum alloy seat tube

Aluminum alloy quick-release pipe clamp

Zheng Xin special tire

Zheng Xin inner tube

Veinmann 520 aluminum ring

Jiuyu ball shaft

Merida aluminum alloy v-type brake

Shimano revolution RS 3 1 positioning knob

Shimano brake transmission line

Shimano TZ30 front transmission

Shimano TY 18 rear transmission

KMC chain

Shimano TZ06 Flywheel

It is basically a scooter. Major upgrades are not recommended. Usually a little maintenance, just oil the chain ~

Personally, I think it's a bit expensive to buy a second-hand knight SX at your price ~

There are two possible heightening pads, which are already below. Can they be improved?

No, you can only go down, not up ~

Does the knight's front shock absorption need refueling?

You can add a little sewing machine oil if necessary ~

Is the air nozzle of the rear inner tube the air nozzle of the old bicycle inner tire?

Both front and rear are ordinary mountain bikes, just like motorcycle valves ~