
Bikes up to 60% offWe monitor over 40,000 bikes daily to find the best prices
Today’s DealsJEFFSY 27 CF Pro
A 27.5″ carbon frame full suspension enduro bike with high-end components.
Compare the full range
Manufacturer Price
$3,999| Weight | 28.4 lbs |
|---|---|
| Frame | Carbon |
| Suspension | Full, 150 / 150mm |
| Fork | RockShox Pike RCT3 |
| Shock | RockShox Deluxe RT3 |
| Wheels | 27.5″ 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.
Feedback?
View all reviews



Jan 2020
The YT Jeffsy is like the bike equivalent of twin-tip skis, inviting lots of rider input and encouraging you to play with the terrain.
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...

Jan 2018 · Rob Weaver
Instead, the Jeffsy 27 offers some impressive all-round credentials and is as happy being razzed about in your local woods as it is clocking up the trail miles, though the bigger-wheeled version does feel like it carries speed a touch better.. .

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?

Nov 2017 · Christoph Bayer
JEFFSY 27 or CAPRA? For our enduro bike comparison, YT sent us the YT JEFFSY 27 CF Pro Race. Does this bike live up to its name? [...]

Aug 2017 · Alan Muldoon
The Jeffsy CF Pro Race 27 takes the stock 27 platform and pumps the travel up to 160mm. It’s something of a lone wolf within the Jeffsy 27 range.
Light, fast and dressed to impress.
Takes the Fox 34 to the limit.
| Frame | JEFFSY CARBON 27,5" 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 27,5“ | 150mm | 15x110mm | 46mm Rake Travel: 150mm |
| Shock | RockShox Deluxe RT3 | 230x60mm Travel: 150mm |
| 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 27,5“ x 28mm | 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 27,5" | 2.35, Rear: e*thirteen TRS Plus 27,5" | 2.35 |
First added March 17
Last updated August 20
Not listed for 2,483 days