Getting more out of your bike is a growing trend thanks to the flexibility of adventure bikes. Mongoose has doubled down on the long-haul lifestyle with their Guide. It aims to tackle gravel roads comfortably all day long, all while providing room for both extra gear and your water.

The Frame

Mongoose Guide

The Guide Expert has a T2 aluminum frame led by a carbon fork. Its 12mm dropouts are spaced 100mm up front and 142mm in the rear; both requiring a 6mm wrench to remove the thru axle. The fork and rear triangle both have rack and fender mounts with additional pannier mounts on the fork. Additionally, their proprietary frame bag bolts across the bottom of the top tube to offer a clean look that will stay in place and not rub paint off the top tube.

Internal cable routing ports brake and shift housing through the fork and the downtube. Its bottom bracket is a 68mm standard thread.

Cage bolts are located on top of and below the downtube. It would be nice to see another cage mount on the seat tube though, especially for the 58.

The Build

The Guide Expert has Shimano’s 105 shifters and derailleurs paired with an 11-speed, 11-32T Sunrace cassette. Up front, the bb holds an FSA Gossamer crank geared to 48-32T. Rounding off the components are flat-mount hydraulic brakes that squeeze 160mm rotors front and back.

Mongoose Guide Expert

Its cockpit gets an Xposure bar and stem with plenty of room for a bag between the offset drops. A 31.8mm Xposure seatpost holds the Mongoose Adventure saddle.

It rolls on tubeless ready WTB STP-I19 wheels with 29×1.75″ Kenda gum-walled tires. Note, the stock tires are not tubeless ready.

Tire clearance is tight upfront but there’s some wiggle room in the back.

Mongoose Guide Expert

The size 58 Guide Expert weighs in at a little less than 24.5 lbs without pedals or the frame bag.

Gravel GeometryMongoose Guide Expert

The Guide has long chainstays at 460mm across the board which helps fit 29×1.75 tires. In the front, its short top tube and angled 100mm stem should help sit riders upright. While a 70.5º head angle aims to offer more precise handling.

Guide Expert

Guide Overview

The $1,800 Mongoose Guide Expert should handle wherever you go especially with its Shimano 105 components, hydraulic brakes and ample storage potential. Plus, the added frame bag helps new gravel riders get started. A bottle cage mount on the seat tube would’ve been nice for easy accessibility while riding, but you could always mount extra cages to the fork as needed. For those looking to get into the world of gravel riding for a reasonable price, the Guide looks like a comfortable option. Check back in the coming weeks when we have a better idea of what it has to offer.


  1. luddite on

    Looks well sorted and good value. Glad that Mongoose finally got their sh*t together after years in the department store wilderness. I wonder if they have a Canadian distributor?

  2. James. on

    This seems pretty solid for the price, although the lack of a seat tube bottle cage is odd. Possibly something they will change as production picks up? My guess is they got this built up asap so media could try it and when the public can actually buy it (and parts are available) Shimano 7000 (not crank) will be the spec.

  3. Esteban LV (@es7ebanlv) on

    >> tackle gravel roads comfortably all day long
    >> lacks front suspension

    Sorry, but a front suspension does wonders on rides above 50km (source: experience), not having one is ridiculous. Lack of seat tube bolts for bottle cage on a long rider is preposterous.

    • Fred Again on

      Lol, not having a suspension fork is definitely NOT ridiculous and the no cages on the seatpost just sounds par for the mongoloose course. Why anyone would consider a mongoose aside from wanting a cheap pile of bike.. preposterous!

  4. Tim on

    460mm chainstays to fit a 29″ x 1.75″ tire? Come on, there are tons of bikes that have chainstays in the 435mm range that fit much bigger tires. The original Surly Karate Monkey of around 2002 could fit a 2.1 or so, and 435mm or so stays out back.

    • Dolan Halbrook on

      The long stays probably more for compliance and the possibility of running rear panniers without heel strike than anything else. Touring bikes have had long stays for ages, and this looks more like an all-road touring bike than anything else.

  5. neilwheel2015 on

    Yet another generic matt khaki green-coloured ‘gravel’ bike . . . they’re starting to go a bit like the way fixies went 10 years ago. Soon, you’ll be able to pick one up in the aisle next to milk and cheese.
    Pile ’em high…

    • Harrison Gregoire on

      I feel that. Especially with the gum walk tires. I mean, I love gum walls, but it’s getting to be a bit much.

      At least as far as trends go, gravel bikes make some sense to the average cyclist. Personally, I’m stoked to see the market flood with capable, disc brake equiped road bikes. The idea isn’t new by any means, but ubiquity has made these features affordable.
      Fixed gear was only ever about being hardcore and catching sub culture scene points… The whole idea of the bike was ironic, riding a track bike on city streets was as much a statement of defiance as it was about ‘mechanical simplicity’. Seems awfully silly now, that’s for sure…

      Road bikes with big tires are here to stay, but i do think the ‘rad’ trustifarian ‘dirt touring’, scene will die like the fixed scene did. Do these people not work? How do they ride months of the year, live off the land, and still constantly outfit themselves with the latest trendy parts from Crust Bikes, Paul or White Industries? None of it makes any sense, and neither do the bikes for the average person.


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