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Today’s DealsJEFFSY 29 CF Pro
A 29″ carbon frame full suspension trail bike with high-end components.
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Manufacturer Price
$3,999| Weight | 28.7 lbs |
|---|---|
| Frame | Carbon |
| Suspension | Full, 140 / 140mm |
| Fork | RockShox Pike RCT3 |
| Shock | RockShox Deluxe RT3 |
| Wheels | 29″ Aluminum |
| Drivetrain | 1 × 12 |
| Groupset | GX Eagle |
| Brakes | SRAM Guide RS Hydraulic Disc |
| Seatpost | Dropper |
Summary
The YT Industries Jeffsy is a highly capable trail bike, praised for its aggressive design, improved geometry, and excellent value. It offers a smooth, efficient ride with a suspension that handles both small bumps and larger impacts well. The bike is noted for its stability at speed and agility, making it a favorite among aggressive riders. However, some reviews mention issues with component choices like harsh-feeling wheels and underpowered brakes in steep terrain.
Aggressive design aimed at serving aggressive riders
Improved geometry for better handling
Excellent value for money
Smooth and efficient suspension performance
Stable at speed yet agile
Harsh-feeling wheels and tires
Underpowered brakes in steep terrain
Some components require adjustment
From end to end, YT’s entire lineup is aimed primarily at serving aggressive riders.
The Jeffsy’s updates make it hugely capable on a wide range of trails
Bang Boom Bang – the JEFFSY likes it rough!
This is not an enduro bike! It's a very capable trail bike.
The highly revamped 2019 YT Jeffsy is now hitting consumers’ hands and receiving rave reviews with new owners.
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Apr 2020 · Paul Burwell
Back to defend its Trail Bike crown is the YT Jeffsy 29 CF Comp 29. Revamped last year: a new carbon frame, adjustable geometry, top-quality spec.

May 2019 · Trev Worsey
With category blurring potential, the new 150 mm travel YT Jeffsy CF PRO RACE 29 is ready to battle way beyond its pay grade, but how does it compare against its big brother the YT Capra CF PRO RACE 29? We tested them both against the clock and on the trails to find out. The […]

May 2019
What happens when you add longer travel, burlier suspension and fancier parts to an already-fancy, burly long-travel trail bike? The YT Jeffsy 29 CF Pro Race.

May 2019 · Tom Marvin
Capable and confident, the Jeffsy retains its place as a great all-rounder
Better pedalling performance, improved geometry, decent kit
Tyres split opinion, rattly bottle, less ‘fun’ than the previous generation
Jan 2019 · Hannah Dobson
It’s the first few minutes of a bike launch and I’m having to try quite hard not to weep. The scepticism brought about by predictably dramatic music, followed by an...

Dec 2017 · Drew Barber
Priced right and packing good looks, the YT Jeffsy is a tempting buy. But how does the Jeffsy star up on the trail or against its 29" brother?
| Frame | JEFFSY CARBON 29" high modular carbonfiber frame, V4L Virtual 4-Link rear suspension, 148x12mm DT Swiss QR Thru axle, down tube/seat stay/chain stay protection |
|---|---|
| Fork | RockShox Pike RCT3 29“ | 140mm | 42mm Rake Travel: 140mm |
| Shock | RockShox Deluxe RT3 | 210x50mm Travel: 140mm |
| Bottom Bracket | SRAM DUB Pressfit |
| Headset | Acros AZX-203 High Cap |
| Stem | Race Face Turbine R 35 50mm |
| Handlebar | Race Face Turbine R 35 35mm Rise | 800mm |
| Saddle | SDG FLY MTN Cutout YT Custom | Red | White |
| Seatpost | e*thirteen TRS Plus 31.6mm | S 125mm Drop | M - XL 150mm Drop | XXL 170mm Drop Type: Dropper |
| Pedals | included / inklusive The included pedals were not made for demanding trails or racing. That is why we also offer you quality pedals at an attractive price in the shopping cart. |
| Grips | ODI Elite Motion V2.1 | Lock On |
| Rear Derailleur | SRAM GX Eagle 12-Speed |
|---|---|
| Crank | SRAM GX Eagle 175mm | 34T | DUB |
| Shifters | SRAM GX Eagle 12-Speed |
| Cassette | SRAM XG-1275 Eagle 10-50T | 12-Speed |
| Chain | SRAM GX Eagle |
| Chain Guide | None included |
| Brakes | SRAM Guide RS ROTOR CENTERLINE | 200mm / 180mm Type: SRAM Guide RS Hydraulic Disc |
| Brake Levers | SRAM Guide RS |
| Rims | e*thirteen TRS Plus 29“ x 27mm | 110x15mm | 148x12mm |
|---|---|
| Spokes | e*thirteen TRS Plus wheelset |
| Front Hub | e*thirteen TRS Plus wheelset, 15mm x 110mm front, 12mm x 148mm rear |
| Rear Hub | e*thirteen TRS Plus wheelset, 15mm x 110mm front, 12mm x 148mm rear |
| Tires | Front: e*thirteen TRS Plus 29" | 2.35, Rear: e*thirteen TRS Plus 29" | 2.35 |
First added March 17
Last updated August 20
Not listed for 2,474 days