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2020 YT Jeffsy Base 29 Bike

Vital Rating: (Outstanding)
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2020 YT Jeffsy Base 29 (TwoTone Blue)
2020 YT Jeffsy Base 29 Bike 2020 YT Jeffsy Base 29 Bike 2020 YT Jeffsy Base 29 Bike 2020 YT Jeffsy Base 29 Bike 2020 YT Jeffsy Base 29 Bike 2020 YT Jeffsy Base 29 Bike 2020 YT Jeffsy Base 29 Bike 2020 YT Jeffsy Base 29 Bike 2020 YT Jeffsy Base 29 Bike 2020 YT Jeffsy Base 29 Bike 2020 YT Jeffsy Base 29 Bike 2020 YT Jeffsy Base 29 Bike
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Need more info? View our Enduro / All-Mountain Mountain Bikes buyer's guide.

The Best Deal on a Well-Performing, 150mm-travel 29er Mountain Bike?

If you can get it, GET IT.

Rating: Vital Review
The Best Deal on a Well-Performing, 150mm-travel 29er Mountain Bike?

🔥Vital MTB’s One-Minute Bike Review 🔥

  • YT Industries Jeffsy 29 Base Mountain Bike
  • 29-inch wheels
  • Price: $2,299
  • 4.5 out of 5-star rating - would definitely recommend
  • Tires? Awesome
  • Wheels? Not bad
  • Brakes? Great stopping power. Lever adjustment is a pain.
  • Bars? A bit stiff
  • Stem? We swapped the 50mm for a 35mm (3 of the riders in our test at were in between medium and large (tested)).
  • Dropper post? Fantastic
  • Customer service? Depends on who you ask.
  • Upgrade-ability? Sky’s the limit.
  • 29er haters, go for the 27.5 model.


Over the past 4 months, Vital MTB had 4 different riders spend time on the YT Jeffsy 29 Base for the test feedback provided below.

The best direct-to-consumer bike deal for a well-performing 150mm travel #29er? Probably. The only reason we would not buy this bike is because it’s almost always sold out, and we would not be able to get our hands on it.

Playful, progressive with a solid spec, the Jeffsy ate rough, rocky #DH tracks and blasted big jump lines. Consecutive mid-size hits may feel harsh. Portly at over 34 pounds, earning our way up was worth it for the descent. This fast-turning, well-handling bike blurs the line between trail  and enduro.

Like most #bikes in this price range, rear hub engagement is weak, the SX cassette is a boat anchor and some rebound settings on the rear shock are useless. The Fidlock water bottle is awkward, but at least it keeps weight low. A couple bolts came loose but once re-tightened have remained snug.

If you think you don’t need the support of a local bike shop and want a kick-ass, do-it-all MTB, there’s no reason not to buy the Jeffsy. To get one, keep hitting refresh on yt-industries.com to see when the Jeffsy 29 Base is back in stock.

💪 Kevin Lillywhite is doing the bulk of the shred-dogging in this video. 💪

Specifications

Product YT Jeffsy Base 29 Bike
Model Year 2020
Riding Type Enduro / All-Mountain
Rider Unisex
Sizes and Geometry
SM (low, high), MD (low, high), LG (low, high), XL (low, high), XXL (low, high) View Geometry
Size SM (low, high) MD (low, high) LG (low, high) XL (low, high) XXL (low, high)
Top Tube Length 572mm 593mm 615mm 638mm 660mm
Head Tube Angle 66.0°, 66.5° 66.0°, 66.5° 66.0°, 66.5° 66.0°, 66.5° 66.0°, 66.5°
Head Tube Length 100mm 105mm 110mm 120mm 125mm
Seat Tube Angle 77.0°, 77.5° 77.0°, 77.5° 77.0°, 77.5° 77.0°, 77.5° 77.0°, 77.5°
Seat Tube Length 400mm 415mm 435mm 460mm 485mm
Bottom Bracket Height 32mm drop, 24mm drop 32mm drop, 24mm drop 32mm drop, 24mm drop 32mm drop, 24mm drop 32mm drop, 24mm drop
Chainstay Length 435mm 435mm 435mm 440mm 440mm
Wheelbase 1182mm 1204mm 1226mm 1255mm 1277mm
Standover
Reach 430mm 450mm 470mm 490mm 510mm
Stack 618mm 622mm 627mm 636mm 640mm
* Additional Info Geometry adjustable via flip chip in rear shock mount.
Wheel Size 29"
Frame Material Aluminum
Frame Material Details High modular alloy; down tube, seatstay, and chainstay protection
Rear Travel 150mm
Rear Shock RockShox Deluxe Select, 210mm x 55 mm
Fork RockShox Yari RC, Motion Control damper, 42mm offset, 15x110 Boost axle
Fork Travel 150mm
Head Tube Diameter Tapered, 1.125" top, 1.5" bottom
Headset ACROS AZX-576, High Cap
Handlebar Race Face Aeffect R, 35mm bore, 20mm rise, 780mm width
Stem Race Face Aeffect R, 35mm clamp, 50mm length
Grips ODI Elite Motion V2.1, lock-on
Brakes SRAM Guide T, SRAM CenterLine rotors (200mm front, 180mm rear)
Brake Levers SRAM Guide T
Drivetrain 1x
Shifters SRAM SX Eagle, 12-speed
Front Derailleur N/A
Rear Derailleur SRAM SX Eagle, 12-speed
ISCG Tabs ISCG05
Chainguide None
Cranks SRAM SX Eagle DUB, 175mm length, Boost
Chainrings SRAM SX Eagle, 32 tooth
Bottom Bracket SRAM DUB
Pedals Basic pedals included, not made for demanding trails or racing
Chain 12-speed
Cassette SRAM PG-1210 Eagle, 12-speed, 11-50 tooth
Rims DT Swiss M1900 Spline wheelset, 30mm inner width
Hubs DT Swiss M1900 Spline wheelset, 110x15mm Boost front, 148x12mm Boost rear
Spokes DT Swiss M1900 Spline wheelset
Tires Maxxis Minion DHR II, EXO, TR, 29" x 2.4"
Saddle SDG Radar MTN, YT Custom
Seatpost YT Postman dropper
Drop: 125mm (SM/MD), 150mm (LG), 170mm (XL/XXL)
Seatpost Diameter 31.6mm
Seatpost Clamp Single bolt
Rear Dropout / Hub Dimensions 148x12mm Boost
Max. Tire Size
Bottle Cage Mounts Yes (single)
Colors TwoTone Blue, Black Magic
Warranty 5 years frame, 2 years components
Weight 33 lb 8.2 oz (15,200 g)
Miscellaneous V4L (Virtual 4-Link) rear suspension
Geometry adjustable via flip chip in rear shock mount
Weight given for LG size frame without pedals
Includes IceToolz tool kit with torque wrench, shock pump, allen key, and anti-slip paste
Price $2,299
More Info us.yt-industries.com

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