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Mongoose Impasse Full Suspension Mountain Bike, Men and Women, 18-Inch Aluminum Frame, 29-Inch Wheels, Front and Rear Disc Brakes, Twist Shifters, 21-Speed Rear Deraileur, Silver

4.0 4.0 out of 5 stars 1,211 ratings

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Size Chart
US Full Suspension Mountain Bike
Brand SizeRider Height (in)Wheel Size (in)
29 Inches64 - 7429
28 Inches64 - 7428
27.5 Inches64 - 7427.5
26 Inches64 - 7426
24 Inches56 - 6624

Purchase options and add-ons


About this item

  • Enhance comfort and performance with the 18-inch aluminum suspension frame, while the 29-inch wheels fit riders 5'4" to 6'2" tall
  • Element suspension fork smooths the bumps and increases control
  • Effortlessly switch gears with the 21-speed rear derailleur equipped with SRAM twist shifters
  • Alloy wheels with quick-release front, Superior braking performance of the alloy front and rear disc brakes, reliable stopping power for enhanced safety and control
  • Assembly Tip: Ensure wheel is as centered between the fork legs, if quick-release lever closes easily, open and tighten the adjustment nut further, if difficult to close, open the quick-release lever, loosen the adjustment nut a little, and try again

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From the manufacturer

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Customer Reviews
3.2 out of 5 stars
25
3.2 out of 5 stars
25
3.2 out of 5 stars
25
4.2 out of 5 stars
77
4.2 out of 5 stars
77
4.2 out of 5 stars
77
Wheel Size
27.5" 29" 29" 29" 29" 29"
Frame Sizes (in inches)
17" 17" 17", 18" 16", 17", 18.5" 16", 18.5" 17", 18.5"
Brake Type
Mechanical Disc Mechanical Disc Hydraulic Disc Hyrdaulic Hydraulic Mechancial
Drivetrain
Pro Rush 1 x 7 drivetrain L-Twoo 1 x 8 drivetrain Microshift 1 x 9 drivetrain SRAM Eagle SX 1 x 12 Shimano 2 x 9 drivetrain Shimano 2 x 9 drivetrain
Suspension fork
Steel, 100mm travel Aluminum, 100mm travel RST Blaze, 100mm travel SR Suntour XCM, 100mm travel Zoom, 100mm travel Zoom, 100mm travel
fox gloves mountain bike mountain bike for women wheelie bikes 29 bmx bike ergon grips mountain

Product Description

Take on rough terrain with the Impasse by Mongoose. The Impasse features a lightweight aluminum hardtail frame with front suspension fork that’s ready for the trail. The 21-speed Sram twist shifters with rear derailleur let you adapt to your terrain with ease, while the front and rear disc brakes provide crisp stopping power every time. Plus, the 29-inch knobby tires give you all the traction you need to conquer rugged trail conditions. There’s nothing you can’t do on a Mongoose.

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Mongoose

Mongoose Impasse Full Suspension Mountain Bike, Men and Women, 18-Inch Aluminum Frame, 29-Inch Wheels, Front and Rear Disc Brakes, Twist Shifters, 21-Speed Rear Deraileur, Silver


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Customer reviews

4 out of 5 stars
4 out of 5
1,211 global ratings

Customers say

Customers like the value of the bicycle. They say it's a good bike for the money, with acceptable quality and inexpensive replacement parts. They are also happy with ease of riding. However, some customers have reported issues with the bike being damaged, with scratches and the chain being damaged. They also say the frame is too short and the seat tube is too narrow. Opinions are mixed on quality, ease of assembly, and performance.

AI-generated from the text of customer reviews

106 customers mention75 positive31 negative

Customers like the value of the bicycle. For example, they say it's a good bike for the money, the quality is acceptable for the price, and the replacement parts are inexpensive. Some mention that it has a nice entry level derailleur made from aluminum castings and steel stampings.

"...Tough, cheap, and it gets the job done.**UPDATE**..." Read more

"...But if your looking for a fairly cheap, reliable gears, and sturdy frame of bike then I recommend this bike." Read more

"...These are very basic tires.Now for the technical stuff. The bike has many plastic parts that squeak while riding...." Read more

"...It is the Shamano Tourney TX (RD-TX 35). A nice entry level derailleur, made from aluminum castings and steel stampings...." Read more

52 customers mention47 positive5 negative

Customers find the bicycle easy to ride. They say the suspension is a plus and makes for a smooth ride. Some say the bike is excellent and handles and rides very well. They also mention that the shifting seems smooth and the rear brake works great. Overall, customers are satisfied with the ease of riding and recommend the product to others.

"...The pedals are metal and nice and grippy. The ride is pretty nice. The rear shock is actually pretty decent. The fork is a little soft...." Read more

"...3 miles with absolutely no issues going uphill, downhill, changing gears, braking and absolutely no issues...." Read more

"...Smooth ride downhill, reliable brakes that slows and stops the bike on time even in faster speeds...." Read more

"...Now for the riding. It rides well. The 29'er tires make riding on rough surfaces easier...." Read more

229 customers mention140 positive89 negative

Customers are mixed about the quality of the bicycle. Some mention it really is a nice bike, it looks and rides well, and is excellent. However, others say that it has some lower quality, slightly heavier materials, and the rear brake unit does not feel strong. Some customers also mention that the guard on the front gear broke off the first day. Overall, the opinions are mixed and it's difficult to say which customers are satisfied with the quality.

"...It was excellent with the frame being well protected and the rest of the pieces of the bike being well packed...." Read more

"...Have been out 6 times now. The terain is very steep, technical, and rugged. Full face and gear required. The 29" wheels are a bonus...." Read more

"...But if your looking for a fairly cheap, reliable gears, and sturdy frame of bike then I recommend this bike." Read more

"...As a serious or semi-serious rider, this thing is a pretender. It LOOKS cool and the feature list SOUNDS good, but in practice, it's just... well, it..." Read more

91 customers mention59 positive32 negative

Customers are mixed about the ease of assembly of the bicycle. Some mention that it's fairly easy to assemble, with good instructions. They say the bike came mostly already assembled, which was a nice surprise. Others however, say that it wasn't assembled properly and the 500+ step instructions were little help.

"...When I opened the box the first thing I notice is that most of the parts are assembled...." Read more

"...With the square taper Bottom Bracket, its easy to upgrade or change the chain rings to other sizes...." Read more

"...Garbage. It's a mess of low-quality frame and assembly and mis-matched components that end up in a disastrous riding experience...." Read more

"This is a great bike for the price. It came mostly already assembled which was a nice surprise. I saved alot of money assembling the rest myself...." Read more

43 customers mention22 positive21 negative

Customers are mixed about the performance of the bicycle. Some mention that the derailers and everything else worked perfectly, and the bike runs great. However, others say that the rear derailleur because the factory ones didn't work properly, the gear is not working properly, and neither of the brakes seem to fully work.

"...The derailers and everything else worked perfectly and I'm already riding it...." Read more

"...It's utterly useless...." Read more

"...This is what I use it for and it works well for this sort of riding. Suspension is rather stiff at first, but gets smoother the longer you ride...." Read more

"...It was tore with the first 4 miles.Doesn't work for me: seat tube is too short and I must buy other one and the seat is not confortable at..." Read more

64 customers mention7 positive57 negative

Customers are dissatisfied with the damage to the bicycle. They mention that the box was damaged, the bike had scratches, and the chain was damaged. Some customers also report that the graphic stickers were damaged due to poor packaging. They also mention that there was a broken rear derailleur and the pedal just completely chipped through the tread on the crankarm.

"...Warp in the front wheel, bull bars, scratches, dirt, everything is worn...." Read more

"...As a result, there were some scratches and rubs on the bike from shipping...." Read more

"...trail ride going up a rocky hill, the rear came off the rim and damaged the tube...." Read more

"...The bike had several scratches and gouges in the paint and decals. I had an issue once assembled where it always threw the chain on the high gear...." Read more

60 customers mention10 positive50 negative

Customers are dissatisfied with the fit of the bicycle. They mention that the frame is too short, the seatpost is too long, and the kickstand is for a smaller bike. They also say that the handlebar is small and the front wheel is large. Customers also say the gears are mismatched to bike/wheel size.

"...Especially the front. They have a tendancy to loosen up. Also you may have to lube the fork every now and then or it will become rigid and stiff...." Read more

"...I notice that small sticker on the right of my bike torn along with small paint, but not to worry with a few paint job it won't be a problem...." Read more

"...6. Gears are mismatched to bike/wheel size. The climbing gear (first) is clearly in a ratio designed for a 24" or at most 26" bike...." Read more

"...Perfect for me. My (Old 26 is 28-1/2"). The seatpost is too short for me, it's 9-7/8" long and I need at least 13-3/4" for peddling..." Read more

Easy assembly
5 Stars
Easy assembly
After reading the reviews on this bike I was so concerned. But I really liked the bike and the features it had so I thought what the heck I'll give it a shot. First let's talk about the packaging which multiple people in here have commented on. It was excellent with the frame being well protected and the rest of the pieces of the bike being well packed. Next we can talk about assembly which multiple people on here have said is very difficult. It took me 30 minutes to assemble the bike including the adjustment of the brakes which is incredibly easy. I would say the most difficult thing to do is to make sure that you get the front tire on properly seated to assure that the rotor is properly aligned inside the caliper. And you loosen the caliper, push the brake lever, and retighten the caliper. Like a 2-minute deal. Oh I should also mention flip the bike upside down before you do this. The derailers and everything else worked perfectly and I'm already riding it. It appears to be a well-built, lightweight, and easy to ride bicycle.For my wife and I which are only going to be riding on trails and state parks Etc I think it's an excellent choice.As far as the fit goes I am 5'11" and 230 lb. The bike fits me perfectly with the seat moved more towards the bottom. I could see where it has plenty of adjustment for somebody that's two to three inches taller than me and maybe one to two inches shorter than me.Add: my wife and I went for our first trail ride. 3 miles with absolutely no issues going uphill, downhill, changing gears, braking and absolutely no issues. I am going to have to pick up a pair of gloves to provide some better cushioning for my hands, and the seat could use some extra cushion as well. But that's more preference than anything else.
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Top reviews from the United States

Reviewed in the United States on July 20, 2013
37 people found this helpful
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Reviewed in the United States on July 31, 2023
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5.0 out of 5 stars Easy assembly
Reviewed in the United States on July 31, 2023
After reading the reviews on this bike I was so concerned. But I really liked the bike and the features it had so I thought what the heck I'll give it a shot. First let's talk about the packaging which multiple people in here have commented on. It was excellent with the frame being well protected and the rest of the pieces of the bike being well packed. Next we can talk about assembly which multiple people on here have said is very difficult. It took me 30 minutes to assemble the bike including the adjustment of the brakes which is incredibly easy. I would say the most difficult thing to do is to make sure that you get the front tire on properly seated to assure that the rotor is properly aligned inside the caliper. And you loosen the caliper, push the brake lever, and retighten the caliper. Like a 2-minute deal. Oh I should also mention flip the bike upside down before you do this. The derailers and everything else worked perfectly and I'm already riding it. It appears to be a well-built, lightweight, and easy to ride bicycle.

For my wife and I which are only going to be riding on trails and state parks Etc I think it's an excellent choice.

As far as the fit goes I am 5'11" and 230 lb. The bike fits me perfectly with the seat moved more towards the bottom. I could see where it has plenty of adjustment for somebody that's two to three inches taller than me and maybe one to two inches shorter than me.

Add: my wife and I went for our first trail ride. 3 miles with absolutely no issues going uphill, downhill, changing gears, braking and absolutely no issues. I am going to have to pick up a pair of gloves to provide some better cushioning for my hands, and the seat could use some extra cushion as well. But that's more preference than anything else.
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4 people found this helpful
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Reviewed in the United States on May 16, 2014
3 people found this helpful
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Top reviews from other countries

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Jeff
5.0 out of 5 stars Great bike
Reviewed in Canada on May 19, 2022
Customer image
Jeff
5.0 out of 5 stars Great bike
Reviewed in Canada on May 19, 2022
All these negative comments are just because you need to understand that it takes some adjustments. Which is the same as any bike. It's not hard to do.

The bike itself is awesome. The parts on it are what you'd expect. It's not top of the line.

The brakes feel solid and compare well with my Trek bike.

The derailer does feel much cheaper then my Trek but works well.

The seat and seat post I swapped from my Trek. The one it comes with is NOT easy on the butt lol.

I also changed the pedals as the lens it comes with are as you'd expect. Entry lvl.

The front shocks out of the box are so nice. I have Rock Shoxw on my Trek and these for now feel just as good.

The tires are ok. I can tell they will wear fast. Very soft rubber. But that's to be expected.

Rims feel good so far. But eventually probably something I'd change up.

I also added a bike rack as there is no place for a bottle. So for $40 it's a cheap addition I'd recommend if you want to have a place to carry water.

I'd suggest getting a front small fender for it. It does kick up more water being a 29".

Back doesn't need one if you do the bike rack as I did as it acts as one.

Back shock is very soft. And is bouncy. It's good enough for now. But prot something I'll upgrade.

All in all. Take the time to set it up. Took me 45 minutes to set it up. Swap parts and adjust.
If you are not savy with adjusting just take it to your local bike shop and they can do it for usually $50.

Update after a few rides.

The front rim's being painted spokes are the worst idea I have seen on a bike. Literally the guy powder coating them must have been in a bad mood. The spokes constantly creak from the paint. I had to literally take some sandpaper and sand the paint down between the spokes to stop the annoying creaking. Back rim was perfectly fine.
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Marco Anaya
5.0 out of 5 stars Excelente para divertirte!!
Reviewed in Mexico on March 3, 2020
David Salazar
5.0 out of 5 stars Llegó en tiempo, buen producto.
Reviewed in Mexico on January 15, 2019
4 people found this helpful
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Alexandre Gobeil
5.0 out of 5 stars Best bike for this price on the market.
Reviewed in Canada on November 19, 2018
5 people found this helpful
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Tim
4.0 out of 5 stars Cheap brake calipers and cheap bottom bracket.
Reviewed in Canada on September 12, 2019
One person found this helpful
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