2021 YT Jeffsy 29

Specs, Comparisons, Reviews, Galleries

Far out or nothing - with JEFFSY we have realized our very own definition of trail riding. JEFFSY is the YT among all mountain bikes, it's like your best friend for new top performances: together you climb the higher mountains, discover the most remote places and stamp downhill with full speed - JEFFSY and you, you are an unbeatable team

Red 2021 YT Jeffsy Core 4 29er trail mountain bike

Key Specs

Specifications for the YT Jeffsy 29 that are the most important to picking a mountain bike.
Specs Jeffsy CORE 2 29 Jeffsy Blaze 29 Jeffsy CORE 3 29 Jeffsy CORE 4 29 Jeffsy Uncaged 8
Price (USD)29993999419949995999
Rear Travel (mm)150150150150150
Front Travel (mm)150150150150150
Head Tube Angle6666666666
Seat Tube Angle7777777777
Wheel Size (in)29-29-29
Max Tire Width (in)-----
Component GroupNX-GX-GX
Frame MaterialAluminumCarbonCarbonCarbonCarbon
Weight (kgs)15.114.214.413.914.5
Components for each model of the YT Jeffsy 29 comes with.
ComponentJeffsy CORE 2 29Jeffsy Blaze 29Jeffsy CORE 3 29Jeffsy CORE 4 29Jeffsy Uncaged 8
Rear ShockFOX FLOAT DPX2 Performance, Shock Length: 210 mm, Shock Stroke: 55 mm 150 mm Travel RockShox SuperDeluxe Ultimate, 210mmx55mmFOX FLOAT DPX2 Performance Elite, Shock Length: 210 mm, Shock Stroke: 55 mm 150 mm TravelFOX FLOAT DPX2 Factory, Shock Length: 210 mm | Shock Stroke: 55 mm 150 mm Travel | 3pos-AdjustCane Creek Kitsuma
ForkFOX 36 FLOAT Performance, 150mm, 44mm offsetRockShox Lyrik Ultimate, 29“, 150mm, RC2, 15x110, 42mmFOX 36 FLOAT Performance Elite, 150mm, 44mm offsetFOX 36 FLOAT Factory 29“ | 150 mm Travel | Grip 2 | 110 x 15 mm Axle | 44 mm OffsetCane Creek Helm MK2 | 150mm travel | 44mm Offset | Adjustable
TiresF: MAXXIS MINION DHR II EXO 3C MaxxGrip 29" x 2.4" R: MAXXIS MINION DHR II EXO 3C MaxxGrip 29" x 2.4"F: Maxxis Minion DHF 29“ x 2.5" R: Maxxis DHR II 29“ x 2.4" F: MAXXIS MINION DHR II EXO 3C MaxxGrip 29" x 2.4" R: MAXXIS MINION DHR II EXO 3C MaxxGrip 29" x 2.4"F: MAXXIS MINION DHR II EXO 3C MaxxGrip 29" x 2.4" R: MAXXIS MINION DHR II EXO 3C MaxxGrip 29" x 2.4"F: MAXXIS MINION DHF EXO 3C MaxxGrip 29" x 2.4" R: MAXXIS MINION DHR II EXO 3C MaxxGrip 29" x 2.4"
WheelsetDT SWISS XM 1900 Spline, Aluminum Rims 29“, Inner Width 30 mm, Front Hub 110 x 15 mm | Rear Hub 148 x 12 mm I XD I 3 Pawl DT Swiss M 1900 SPLINE, 29" x 30mm, 110 x 15mm, 148 x 12mmDT SWISS XM 1900 Spline, Aluminum Rims 29“, Inner Width 30 mm, Front Hub 110 x 15 mm | Rear Hub 148 x 12 mm I XD I 3 PawlDT SWISS XM 1700 Spline, Aluminum Rims 29“ | Inner Width 30 mm | Front Hub 110 x 15 mm | Rear Hub 148 x 12 mm I XD I Ratchet 36SLCrankbrothers Synthesis Enduro Alloy Rims 29“ | Front Inner Width 31.5 mm | Front Hub 110 x 15 mm | Rear Hub 148 x 12 mm, Inner Width 29.5 I I9 1/1 XD
BrakesSRAM G2 R, 4-pistonSRAM G2 RSC, 4-pistonSRAM G2 R, 4-pistonSRAM G2 RSC, 4-pistonSRAM G2 RSC, 4-piston
RotorsF: SRAM Centerline 200mm R: SRAM Centerline 200mmF: Centerline 200mm R: Centerline 200mmF: SRAM Centerline 200mm R: SRAM Centerline 200mmF: SRAM Centerline 200mm R: SRAM Centerline 200mmF: SRAM Centerline 200mm R: SRAM Centerline 200mm
StemE13 Base 35Renthal Apex 35, 50mmE13 Plus 35Renthal APEX 35, 50 mm, +/-6°Renthal APEX 35, 50 mm, +/-6°
HeadsetAcros AZX-576Acros AZX-576Acros AZX-576ZS44 ZS56, High Cap, 2 Spacer 5 mmCane Creek Hellbender 70
HandlebarsE13 Base 35 Renthal Fatbar 35, 30mm Rise, 780mm WidthE13 Plus 35 Renthal Fatbar 35, 780mm, 30mm Rise, 7° Back, 5° Up Renthal Fatbar 35, 780mm, 30mm Rise, 7° Back, 5° Up
Shift LeversSRAM NX EAGLESRAM GX EagleSRAM GX EAGLESRAM X01 EAGLESRAM GX EAGLE
GripsODI Elite Motion V2.1Sensus LiteODI Elite Motion V2.1ODI Elite Motion V2.1ODI Elite Motion V2.1
SaddleSDG BEL AIR 3.0SDG RADAR MNTSDG BEL AIR 3.0SDG BEL AIR 3.0SDG BEL AIR 3.0
SeatpostYT Postman Remote, 31.6mm YT Postman, 31.6mm diameterYT POSTMANMMX Remote, 31.6mmYT POSTMANMMX Remote, 31.6mmSRAM Reverb AXS, 31.6mm
Bottom Bracket-SRAM DUB---
CassetteSRAM PG 1230 EAGLE, 10-52t, 12-speed SRAM XG1275 Eagle, 10-52t, 12-SpeedSRAM XG1275 EAGLE, 10-52t, 12-speedSRAM XG1295 EAGLE, 10-52t, 12-speedSRAM XG 1275 EAGLE, 10-52t, 12-speed
Chain-Chainguide: E13 TRS Plus ---
CranksetSRAM Descendant 6k, 175mm length, 32t SRAM GX Eagle, 175mm, 32T Boost, DUBSRAM Descendant 7k, 175mm length, 32tSRAM Descendant Carbon 175 mm, 32T, DUB-PressFitSRAM GX Eagle, 170mm length, 32t
Rear DerailleurSRAM NX EAGLESRAM GX Eagle, 12-SpeedSRAM GX EAGLESRAM X01 EAGLESRAM GX Eagle AXS
Geometry numbers for each YT Jeffsy 29, the fit, feel, & handling.
Geometry Jeffsy CORE 2 29 Jeffsy Blaze 29 Jeffsy CORE 3 29 Jeffsy CORE 4 29 Jeffsy Uncaged 8
SizeMDMDMDMDMD
Crank Length (mm)175175175175175
Stem Length (mm)5050505050
Seatpost Length (mm)125125125125125
Handlebar Width (mm)780780780780780
Reach (mm)442450450450450
Top Tube Length (mm)590593593593593
Stack (mm)608622622622622
Wheelbase (mm)11911196119611961196
Chainstay Length (mm)432435435435435
BB Drop (mm)1332323232
BB Height (mm)344344344344344
Head Tube Angle - High (degrees)66.566.566.566.566.5
Head Tube Angle (degrees)6666666666
Seat Tube Angle (degrees)7777777777
Seat Tube Angle - High (degrees)77.577.577.577.577.5
Head Tube Length (mm)120105105105105
Bike Standover Height (mm)684702702702702
Fork Rake Offset (mm)4442444444