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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

    • Based on 1,225 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon
Arrives Saturday, Jan 4
Order within 21 hours and 18 minutes
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Size: 29-Inch Wheels


Color: Silver


Features

  • 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

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.

Bike Type: Mountain Bike


Age Range (Description): Adult


Brand: Mongoose


Number of Speeds: 21


Color: Silver


Wheel Size: 29 Inches


Frame Material: Aluminum


Suspension Type: Dual


Special Feature: Lightweight, 21 speed, Aluminum Frame, mountain bike


Included Components: Bike


Bike Type: ‎Mountain Bike


Age Range (Description): ‎Adult


Brand: ‎Mongoose


Number of Speeds: ‎21


Color: ‎Silver


Wheel Size: ‎29 Inches


Frame Material: ‎Aluminum


Suspension Type: ‎Dual


Special Feature: ‎Lightweight, 21 speed, Aluminum Frame, mountain bike


Included Components: ‎Bike


Size: ‎29-Inch Wheels


Brake Style: ‎Disc


Specific Uses For Product: ‎Trail


Item Weight: ‎44 Pounds


Style: ‎Impasse


Model Name: ‎Impasse


Wheel Material: ‎Aluminum


Maximum Weight Recommendation: ‎250 Pounds


Assembly Required: ‎Yes


Bicycle Gear Shifter Type: ‎Twist Grip


Number of Handles: ‎1


Skill Level: ‎Intermediate" or "Experienced


Global Trade Identification Number: ‎11


UPC: ‎038675278011


Manufacturer: ‎Pacific Cycle, Inc.


Item Package Dimensions L x W x H: ‎56 x 30.5 x 8.5 inches


Package Weight: ‎21.77 Kilograms


Item Dimensions LxWxH: ‎57 x 9 x 31 inches


Brand Name: ‎Mongoose


Warranty Description: ‎Limited Lifetime


Material: ‎Aluminum


Suggested Users: ‎mens


Part Number: ‎R2780


Date First Available: January 12, 2012


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Jan 4

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • From extremely good to don't buy this
I bought the Mongoose Impasse because it fit my budget for a full suspension 29'er mountain bike that I could grow with. I felt the bike was a bit of a gamble, because detail specs and reviews are all over the place. From extremely good to don't buy this, it's garbage. I know from life long experience that some people expect way too much for what they are paying for.I also think the reviewer should specify a little background of what they want to use an item for and their expectations. I know, again from experience, that you can't get a $1000 dollar anything for $300. I also know that through research and patience, and SALES, you can get a $1000 something for $650. I am 63 years old, 6'2" tall, and weigh 220 lbs. I ride Rails to Trails conversions, city parks, greenbelt rides, gravel roads, and occasionally some light, through the woods trails with some downhills and small drop-offs. No extreme, bite your lip, 3o mph, downhill competition. I wanted to try a 29" bike and more importantly, one with disc brakes front and rear to replace my 26" bike that is some 8 years old (Mongoose XR75) with v-brakes. Cheapest full suspension bike you can buy from Wally is about $130 without disc brakes. With front disc brakes only, you get up to $180 to $220. That's about the top of the line at wally except sometimes in the spring of the year, you can find a full suspension bike with disc brakes front and rear for $280. Anyone expecting a $1000 bike for $300 is just not realistic. $500 bike, close, maybe. With some ($250+/-) upgrades, you can approach a $900-$1000 bike easily. One of the reasons I am upgrading to this bike over my existing 26" is that the tires needed to be replaced. The CHEAPEST I could find for tires and tubes was $70 delivered. The CHEAPEST. Sky is the limit. Choice is to spend $70+ for tires and tubes for an 8 year old bike, or buy a new bike with new technology. Enter the Mongoose Impasse. About the packaging and delivery. The bike was rather poorly packed in the Mongoose factory box. No packing was in the box to protect delicate pieces like the rear derailleur, or the wheel hubs. The bike came partially assembled with the front wheel tie wrapped to the frame, as well as the handlebars strapped to the front forks. Just a little bubble wrap, foam around the frame in key places, and a few plastic protectors for the hubs that were broken and laying in the bottom of the box. As a result, there were some scratches and rubs on the bike from shipping. I have found no other way to get this bicycle except through mail order so you are at the mercy of how the shipping company handles it. Better packaging and protection by the manufacturer would increase the bottom line cost of the bicycle, but I dare say, it would avoid some returns of this bike because of poor packaging resulting in scratches, buffs, bent or lost parts etc. More cost for packaging would result in less returns, so the bike price could be the same. By the way, my bike was manufactured on April 2015 as found on the down-tube or seat-post at the bottom near the crank. You need this as well as the model number R2780 if you need to call for warranty work. Next, the Owners Manual covers ALL Mongoose "department store" bikes, so be patient to find the section specific to the features on your model (aka Threadless stem vs classic Quill Stem adjustment)(V-brakes vs disc brakes). I would have liked a shorter owners manual with more info specific to this model, but again, this would increase cost and inventory problems with the manufacturer. This ALL-IN-ONE manual helps to keep cost down, so please don't complain! After assembly (which is not really difficult assuming there are no damaged parts), be prepared to adjust the disk brakes. They should not drag, and are easy to adjust if you follow the manual. Just be sure to spin the wheels and ensure that the disc is centered in the caliper. I also had to spend a little time making adjustments to the rear derailleur to make it shift properly which was expected. If you are unsure about being able to do this sort of work, just take it to a local bike shop and they will set it up properly for you (for a fee +/- $50). That is one difference between buying your own (savings) versus buying from a bike shop that will set-up and check the bike before it is sold to you. Even after riding this or ANY bike, you either learn how to maintain and adjust it yourself, or take it back to the shop and spend some more money. True whether you buy a $200 bike or a $2000 or more bike. The element front fork absorbs bumps, but has no hydraulic or pneumatic dampening, its basically a simple spring tube that is adequate for light off roading. It uses the new technology of threadless headset. Might replace this in the future with a RockShox XC 28 fork w/oil dampening ($109) just because I have never owned such an expense on any bike I have owned. Would like to know what that feels like. The rear shock is just a spring with pre-load only. It is easily adjusted to stiffen or loosen your ride. I have found NO direct replacement for this shock/spring. The closest thing I can find is a DMN Mountain Bike Air Rear Shock With Lockout 165mm ($85). It features air adjustable ride or stiffness, plus a lockout. The lockout permits you to make the bike essentially a hard tail which means you can ride UP a hill without the bounciness. I get off my old 26 and crank done the spring to get this done. Again, something I have never had, but would like to try. The problem with this upgrade is that the STOCK Shock is 150mm or 6" long. The DMN shock is 160mm or 6'5" long. This will change the geometry of the bike, maybe better, maybe worse, I'll let you know later if I upgrade this! All of the upgrades so far, ($26+$109+$85=Total $220) This added to the cost of the bike $280+$220=$500 bike cost. Close to a $900 bike value. The big thing is you can do it a little at a time, while riding, instead of dishing our $500 right now. You may never even want to upgrade this bike and ride it like it is till she drops. Again, I might upgrade the shock and fork in the future just because I have never had one. All in all, the suspension works well to smooth out ruts and pot holes in rural and country roads, as well as gravel/dirt roads, and wooded area trails. 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. The Mongoose Impasse feels like and looks like a decently sturdy bike for taking on some dirt/gravel roads, light trails, and commuting. I wouldn't take it on any hardcore downhill paths or do jumps with it, that's what a $1000+ bike is for, but it can go over roots/rocks and things very well as is. The ZOOM disc brakes works surprisingly well. They are about one half to one third the cost of more premium brakes, but this is another reason the bike is only $280. I may upgrade these with Shimano BR-M416A or Avid BB7's when the pads wear out. Replace pads for about $15 or get all new brakes for $50 to $60. Again, approaching that $500 cost or better bicycle. The Shimano rear derailleur changes the gears quickly and once adjusted, is nice and quiet (no clicking). It is the Shamano Tourney TX (RD-TX 35). A nice entry level derailleur, made from aluminum castings and steel stampings. The Wheel hubs look like WheelMaster 'Quando' (sealed bearings). This bike is built in China so the aluminum hubs and wheels are, well, Chinese. The rims are a double wall rim, so they should take some pounding. Spokes are painted steel. The tires are NO-NAME brand. Inflate from 35 PSI, recommended 40 PSI, and a maximum of 65 PSI. 198 lbs MAX load. That's 396 pound person if you were sitting equally on both wheels/tires or 198 lbs MAX if you are on one tire. Well, let's see, I weigh 220 lbs. Hummmm......is that going to be a problem. Not so far. Wonder what the rims are rated for??? The Crank is a ProWheel with 175mm long Alloy arms, square taper BB (Bottom Bracket) and riveted steel chain rings, all painted black. With the square taper Bottom Bracket, its easy to upgrade or change the chain rings to other sizes. For my height, I actually need 180mm arms, not sure about the gear sizing yet, just sayin. AS for the SIZE of this bike? Because of it's geometry nature and tires, I would say this is a MEDIUM frame. (see below) The wheel base, front wheel axle to rear wheel axle is 42-3/8" (Old 26 is 41-3/8") From ground to top of seat post quick release is 29-3/4" (Old 26 is 30-3/4") From center of crank to top of seat post quick release is 17-1/2" (Old 26 is 19-3/4") [Note: This is usually the FRAME size]. From ground to lowest part of frame at seat post is 28-1/4" (Old 26 is 28-1/4") From ground to hightest part frame at handlebar headset 35-3/4" (Old 26 is 32-3/4") From back of handlebar headset to center of seat post is 20-7/8" (Old 26 is 20-3/4") From Rear axle to the center of the pedal crank is 18-1/4" (Old 26 is 17-1/4") From center of the pedals to the center of the crank is 6-3/4" (Old 26 is 6-3/4") NOTE: It is roughly recommended that when you stand with the bike between your legs, you should have at least 2" clearance between your crotch and the bike frame. My inseam is 32" and when standing just in front of the seat comfortably the ground to top of tube height is 30". 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 uphill. Going down hill, you will usually lower your seatpost by 2-4". So for going downhill, this seat height would be quite acceptable. However, I do go both uphill and downhill as well. Now for the riding. It rides well. The 29'er tires make riding on rough surfaces easier. Riding through grassy fields, the woods trails, gravel roads, is easier than with my Old 26" wheel mountain bike. The seat is surprisingly comfortable, although at my age, I will be replacing it with a wider gel seat. The bike is not too heavy, especially considering it's size. Roughly 47 lbs, versues 46-52 lbs for the competion. Some of the cost difference of high-priced bikes in keeping the weight down around 36-38 lbs is using more costly components like carbon fiber, better aluminum, etc. Ride this or any bike for a month or two, loose 10-15 lbs and save yourself some money, not to mention, BETTER HEALTH. Besides the frame being aluminum (not including the 'chain stay' aka rear fork which are steel), the handle bars, thread-less stem, seat post, crank arms, yoke of the front fork, and calipers are all aluminum too. The brake levers are aluminum and plastic, as are the SRAM shifters. typical of bikes in this price range. A pre-planned upgrade to Shimano EF-51 Shifter/Brake Lever Combo (3 x 7 Speed) for $26 will make the bike perform closer to that $500 price range bike. Again, this is not a MUST upgrade, I have used the SRAM SureGrip Max shifters for years with success. I would just like to try the trigger shifters one time. To have the shifters and brake levers in combo should free up the handlebar space too and make it look (BE) more like that $500 bike. People have complained about where to mount a water bottle holder. If you look at any other PURE mountain bike, most do NOT have a place for water bottles. They us a backpack hydration system.The bike uses all metric fasteners so a compact, take it with you, tool kit like the ones made by Topeak would be a wise decision/purchase to have for ANY bike owner. With another $250 or so upgrades mentioned, this bike will easily be right up there with a $1000 bike. If you are concerned about weight, carbon fiber seatpost, handlebars, new shock/fork supsension, etc. upgrades can bring the weight down to a respectable 36-38 lbs. Yes, you will have a total of a little more than $500, but one step at a time if want to, instead of $500 or higher, all at once. Bottom line is the Mongoose Impasse is a competent light to medium duty full suspension 29" mountain bike as it sits for $280 and its loads of fun to ride. IF this review was helpful to you, please leave a commend below, if nothing more than Thank You, so I will know whether I have waisted my time and or yours and so I will know whether to ever take the time to write another review or not. If you have any questions, just ask, I would be happy to help you any way I can! I wish I had this help before I purchased mine. Although it WAS still a good decision. Happy Trails!!! ... show more
Reviewed in the United States on August 30, 2015 by Dennis
    • Solid get around
I just bought this for short trips around town. Sturdy, well built. No overly heavy. It does what its supposed to. I’ve had it for over a year and its still like new. Would recommend
Reviewed in the United States on September 26, 2024 by M. Warren Durkin
    • The bike is good after some fixes...
When I ordered this bike, it arrived fairly quick. When I opened the box the first thing I notice is that most of the parts are assembled. I just have to attach the handle bars, the wheels, and the pedals. Then 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. Then, when I thought that I already aligned the wheels and its disc brakes to the center, it started squeaking when I first rode it which later I found out that one side of the brake pads were touching the disc while turning and it was dirty. Then I tested the derailleurs if they have smooth transition when changing gears, but the front derailleur was having a hard time changing gears. So I had to tune it. Although after tuning the derailleurs, it still would take 2 or 3 seconds before it changes gear or more when it's uphill (when I'm riding. If no one is riding, it takes a second or less maybe because of the weight of the rider that affects the transition of the gears). I could have just brought the bike to a bike store to save myself some trouble tuning the bike, but I was kinda short of money at that time because of the some bills I had to pay. Besides, I was a beginner at that time so I had to learn how to tune and fix my bike by myself which, in the end, proved to be educational. After all the fixes, my Impasse Dual bike proved to be good bike. Smooth ride downhill, reliable brakes that slows and stops the bike on time even in faster speeds. Although, there is still that problems of changing gears, but 2 or 3 seconds of waiting before it changes gear is not really problem for me. And its weight can be dragging going uphill, but I have a fairly strong legs so its not a problem. This is the best a $290 bike can offer for its performance so I wasn't expecting that much of it. I have this bike for 2 years now and so far it hasn't really given me problems. Not that bad for a $290 bike. If you are expecting more from this bike, then better find a more expensive bike where their drive trains, derailleurs, brakes, etc. are high performance because this bike will be a disappointment. But if your looking for a fairly cheap, reliable gears, and sturdy frame of bike then I recommend this bike. ... show more
Reviewed in the United States on May 16, 2014 by Joel T.

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