Xspec 26" 21 Speed Folding Mountain Bike Bicycle Trail Commuter for Adults

Good bike

I've had this bike for a few months now, and overall I think it's pretty decent for a compact entry level mountain bike. To start with, it's hard to find a dual suspension 21 speed bike with disk brakes and trigger shifters for a better price (folding or otherwise). Assembly was fairly easy and it seems to come with a more model specific manual now, while still being somewhat general in the instructions. Aligning the front brake took some patience, but is easily doable for anyone with basic tools and the rudimentary skills to use them.The bike fold up easily and fits in the trunk of my 2013 Sonata pretty well with room to spare. The bike is heavy though (40.8 lbs.) and takes some effort fold it and lift it up. Definitely not for carrying around for any prolonged periods. The bike is also pretty solid and stable once properly unfolded. The wheels tires and brakes all work fine. The kickstand is better than average. The pedals fold (convenient), but are otherwise small and plastic. There is no quick-release or folding gimmick for the handlebars and they are also pretty narrow. However, if the handlebars were any longer it probably would fit in my trunk, so I guess it's a trade-off for portability. The seat, while not the most comfortable, isn't terrible and hasn't left me hurting after any rides.The shocks are pretty basic. The front fork has about 3 inches of travel with no adjustments for preload or rebound, and only an inch of travel on the rear shock. There are a few options out there for upgrading the fork, but you're pretty much stuck with the rear shock. However, as is, the pair works well enough for road biking and light trail use.The Shimano trigger shifters and rear derailleur are entry level, but work well and shift smooth. However, the Sunrun front deraileur was worthless. No amount of adjusting could get it to shift through all three of the front gears. No matter what I did, I was stuck with either one or two gears at best. I ended up replacing it with a nicer, fairly cheap, Shimano Altus FD-M313 front derailleur. Shifts through all front gears perfectly now.If you plan on doing any serious climbing, a cheap and easy upgrade would be to replace the existing 14-28t freewheel with either a Shimano MF-TZ31 14-34t "MegaRange" freewheel or Sunrace MFM4S 13-34t "Megadrive" freewheel. I went with the Sunrace, because of the extra top end speed you also gain with the smaller 13t gear. In either case you will need a longer chain to wrap around the larger 34t gear. The rear derailleur can handle it though, but it will need to be adjusted accordingly. You will also need a Park Tool FR-1 freewheel removal tool and chain-break tool if you don't already have them (also inexpensive). It costs around $50 for all of the parts and tools (cheaper if you already have the tools) and it's about an hours worth of work, but it's also the best upgrade for the money if you're willing to do the work.In conclusion, this is a pretty decent starter mountain bike with the ability to fold and store in most midsize car trunks. With the exception of the weight and front derailleur, it's hard to fault the bike, especially considering the price and all you get for it. The bike may need some tinkering or adjustments for some, but nothing that can't be figured out with the manual or YouTube videos. Obviously some compromises had to be made, but I don't regret the purchase, as it ultimately fulfilled my needs for portability, paved and light trail use, and budget limits.

The bike rides pretty well and serves its purpose. Yes the chain jumps gears sometimes, but just shift to the next gear and it'll catch. For the price, I was expecting this. I only used it for short trips from the overflow lot at campus to my classes. Downhill this thing is fast and fun, uphill is a workout. The Chinese rubber tires on this smell absolutely terrible and I can still smell them now when I walk into my garage (it's been about 3 months now). If this was going inside of your home you would probably want to replace the tires.Portability: I have a 4 door Civic, and I can barely fit it in the truck, I usually have to fold the back seats down. The main problem is the length of the handlebars are just an inch too long to get the trunk lid down, and the wheels are so big that turning the handlebars isn't really possible. With a little practice I've been able to do it more effectively, but it's still heavy and awkward in a small car. Another issue is after about 10 uses, the locking lever has become extremely difficult to lock down, I'm not sure if this was user error cramming it into my car. Once it's locked down, the bike is good to go and no issues. It is nice only have a single fold, you unfold it, clamp the lock and go, you don't have a series of events like the 20" bikes. With that being said, I haven't tried one of the 20" folding bikes but that might be my next purchase for a bike that needs to be frequently folded and unfolded. For something you just need to transport occasionally, this probably rides better than a 20" bike, there are more gears, bigger wheels and shocks so you don't feel every tiny pebble and bump in the road.Assembly: there is one Youtube video of an employee assembling this; it's helpful but he leaves out a few details. They really should put out a better step by step installation video. I can't remember specifics, but don't throw anything out, a couple things that seemed like packing parts were actually parts you need to use.One helpful thing I do remember was the kickstand was too vertical to balance the bike up. If this happens, you just need to slightly loosen the bolts that hold it on, push the bike down on it or pull on it to bend it out a tiny bit, then tighten the bolts back down.