2019 YT Jeffsy 29 AL Base vs 2019 YT Tues 27 AL

The YT Industries Jeffsy 29 AL Base is a Trail bike, while the YT Industries Tues 27 AL is a Downhill bike. Both bikes have Aluminium / Alloy frames. The YT Industries Jeffsy 29 AL Base has 29" wheels, while the YT Industries Tues 27 AL has 27.5" wheels. Both bikes have forks from Fox. The YT Industries Jeffsy 29 AL Base retails for $2,299 USD, while the YT Industries Tues 27 AL retails for $2,699 USD. The YT Industries Jeffsy 29 AL Base comes in S (low, high), M (low, high), L (low, high), XL (low, high), while the YT Industries Tues 27 AL comes in S, M, L, XL, XXL.

  • Description
  • Buy
  • Frameset
  • Frame Material
  • Frame
  • Fork
  • Shock
  • Motor
  • Battery
  • Wheels
  • Hubs
  • Wheels
  • Wheel Size
  • Spokes
  • Tires
  • Drivetrain
  • Chain
  • Crank
  • Bottom Bracket
  • Front Derailleur
  • Rear Derailleur
  • Shifters
  • Cassette
  • Pedals
  • Components
  • Brakeset
  • Brakeset Brand
  • Handlebar
  • Saddle
  • Seatpost
  • Stem
  • Grips
  • Headset
  • Hydro-formed aluminum frame, stealth seatpost routing, seat stay and chainstay protection
  • FOX 34 Float Rhythm, Boost 15QR x 110mm, 44mm offset, 140mm
  • FOX Float DPS Performance, 3-position, 200mm x 57mm
  • DT Swiss M 1900 Spline wheelset, 15mm x 110mm front, 12mm x 148mm rear
  • DT Swiss M 1900 Spline wheelset, 30mm inner width
  • 29"
  • DT Swiss M 1900 Spline wheelset
  • Maxxis Minion DHR II, 29 x 2.4"
  • 435, 440, None included, 34 tooth, SRAM GX Eagle
  • SRAM NX Eagle DUB, 175mm length
  • 32 drop, 24 drop, SRAM DUB press-fit
  • SRAM NX Eagle
  • SRAM NX Eagle, 12-speed
  • SRAM Guide T with Centerline rotors (200mm front and 180mm rear), SRAM Guide T
  • Race Face Aeffect R 35, 20mm rise, 780mm width
  • SDG Fly MTN, white/gray, YT custom
  • SDG Tellis dropper, 125mm or 150mm drop, 31.6mm, Standard single bolt, 31.6mm, Standard single bolt
  • Race Face Aeffect R 35, 50mm length
  • ODI Elite Motion V2.1 Lock-on
  • Acros AZX-203, high cap
  • 7005-T6 alloy with downtube protection
  • FOX 40 Float Performance Elite, 52mm rake, 20x110mm thru-axle, 203mm
  • FOX Van Performance Series, 267mm x 89mm
  • e*thirteen LG1, 32 hole, 110x20mm front, 150x12mm rear
  • e*thirteen LG1, 30mm width, 32 hole
  • 27.5"
  • e*thirteen LG1
  • Onza Aquila, 27.5" x 2.4"
  • 435mm, 440mm, e*thirteen LG1, Race Face, 34 tooth, SRAM PC1130, 11-speed
  • Race Face Chester, 165mm length
  • 7mm drop, Race Face PressFit, 83mm
  • SRAM GX DH, 7-speed
  • SRAM GX, 7-speed
  • TRP Quadium, 4-piston caliper, 203mm rotors, TRP Quadium, tool-free reach adjust, aluminum lever
  • Race Face Chester 35, 35mm rise, 780mm width
  • SDG I-Fly 2.0
  • SDG I-Beam alloy, 300mm length, 30.9mm, Standard single bolt, 30.9mm, Standard single bolt
  • Race Face Chester 35, 50mm width
  • ODI Elite Motion V2.1 lock-on
  • Acros AZX-257, high cap

Why it pays to compare

Mountain Bikes are complicated machines.

They have parts from hundreds of different manufacturers, come in all shapes and sizes (and colours) and are all suited for different purposes. Choosing the right new (or used) Mountain Bike is a complicated, confusing and highly emotional (think buying a new car- the shiny red one is the best choice right?).

Comparing mountain bikes helps bring a bit of logic and reason into the decision process. Not only will comparing mountain bikes save you money, but you'll also find the bike most suitable to you, your riding style and your budget. Plus, when you do hit the Buy Now button, you'll have the confidence you're choosing the perfect bike for you.

It's easy to get carried away by the most rad looking frame, with the coolest paint job and the most aggressive new geometry, but the components are one of the most important things to consider.

A wise Mountain biker

What to compare


It's essential to know which components make up a bike. From there you can compare the differences, such as build quality, performance, features, weight and price. This takes some of the guesswork out of buying a mountain bike.

Here are the components that have the biggest impact on your ride. You should be paying particular attention to these:

  • Fork
  • Shock
  • Drivetrain (Derailleur, shifter, cranks, chain etc.)
  • Brakeset
  • Wheels

Ultimately, for most of us, price is the deciding factor and you want to get the most bang for your buck. Comparing the price of mountain bikes, along with which components you're getting, helps you determine what you're actually paying for. Are you spending your hard-earned dollars on a quality bike frame, with quality components and a solid warranty? Or are you simply paying for a brand name?


Nothing is more helpful than what real people think about a bike. It's the next best thing to riding one yourself. Reviews give you a real insight into how a bike actually rides, instead of just what the numbers seem to say about it.


Different bike companies have different warranties. It's important to compare the length of these warranties, what they'll cover and who's covered.

How to compare

  1. Search for mountain bikes that you'd like to compare.
  2. Tap Compare. You're done. No really, you are.
  3. A huge comparison table comes up, allowing you to compare components and specs for each bike.
  4. Want to delve into a bike a bit more? Click on the bike's name to view in-depth info, reviews, prices, specifications, images and more.