For the JEFFSY Base, we equipped a robust aluminum frame with carefully selected components. Whether you’re blasting around your home trails or touring the mountains, the RockShox suspension with 160 mm front travel and the playful handling of the 27.5'' wheels ensure that you’ll always have fun. The JEFFSY Base is the perfect bike both for lovers of high-quality aluminum bikes and all-mountain rookies alike.
With 160 mm of travel, the RockShox Yari RC is built around the same robust chassis as the Lyrik, matched up here with the proven Motion Control damper. Out back, the RockShox Deluxe Select shock provides all the performance you require from an all-mountain bike.
The 1x12 drivetrain is made by SRAM: the SX Eagle group features an aluminum crank with a steel chainring and thanks to the 11– 50 t cassette, it provides enough range to make sure you can always find the right gear for any terrain. The M1900 wheels from DT Swiss were developed specifically to meet the demands of modern all-mountain bikes and together with the MAXXIS Minion DHR II tires they form the perfect combo for both uphill and downhill action. SRAM’s Guide T delivers reliable braking performance while the YT Postman dropper post makes sure you always have the saddle where you need it.
FrameJeffsy Alloy 27,5"
high modular alloy main frame | V4L Virtual 4-Link rear suspension | 148x12mm DT Swiss QR Thru axle | down tube/seat stay/chain stay protection
CranksetSRAM SX Eagle
175 mm | 32 T | DUB
WheelsetDT Swiss M 1900 SPLINE
27,5" x 30 mm | 110 x 15 mm | 148 x 12 mm
ForkRockShox Yari RC
27,5" | 160 mm | 15QR x 110 | 46 mm Rake
Rear DerailleurSRAM SX Eagle
Front TireMAXXIS Minion DHR II
27,5" x 2.4 | EXO | TR
ShockRockShox Deluxe Select
230 x 65 mm
ShifterSRAM SX Eagle
Rear TireMAXXIS Minion DHR II
27,5" x 2.4 | EXO | TR
StemRace Face AEFFECT R 35
50MM LENGTH | 35MM CLAMP | 0 RISE
CassetteSRAM PG1210 Eagle
11- 50 T | 12- Speed
BrakesSRAM Guide T
Rotor Centerline 200 mm / 180 mm
Weight*14,1 kg / 31,09 lb
*Avg. weight shown is for size S bike, with tubes, no pedals, no bottle
31.6 mm | S - M 125 mm drop / L 150 mm drop / XL - XXL 170 mm drop
Pedalsincluded / 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.
HandlebarRace Face AEFFECT R
780 mm Width | 20 mm Rise | 35 mm Clamp
SaddleSDG RDR MNT
Tool KitIceToolz Set
Torque Wrench (3NM-10NM; 3-6mm, reset) | Shock Pump (330psi/20.6bar; pressure relief valve) | Allen Key | Anti-Slip Paste
GripsODI Elite Motion V 2.1
Frame SizeS / M / L / XL / XXL
The JEFFSY 27’s long reach, slack head angle and low front all provide for aggressive downhill performance and a feeling of safety even on the most demanding descents. JEFFSY sits down into the trail, and the low center of gravity puts the rider in the best position for optimal control, even when things get steeper and faster.
The steep seat tube angle provides for efficient uphill performance and the short chainstays help balance out the long main triangle. Thanks to the Flip Chip you can easily modify the geometry by making both the seat tube angle and the head angle 0.5 degrees steeper while raising the BB by 8 mm.
|A Toptube length||567 mm||590 mm||613 mm||636 mm||660 mm|
|B Reach||422 mm||442 mm||462 mm||482 mm||502 mm|
|C Stack||598 mm||608 mm||617 mm||626 mm||635 mm|
|D Seattube length||395 mm||415 mm||435 mm||460 mm||485 mm|
|E Chainstay length||432 mm||432 mm||432 mm||437 mm||437 mm|
|F Headtube angle||65,5 / 66 °||65,5 / 66 °||65,5 / 66 °||65,5 / 66 °||65,5 / 66 °|
|G Seattube angle (eff.)||76,5 / 77 °||76,5 / 77 °||76,5 / 77 °||76,5 / 77 °||76,5 / 77 °|
|H BB Drop||13 / 6 mm||13 / 6 mm||13 / 6 mm||13 / 6 mm||13 / 6 mm|
|I Wheelbase||1167 mm||1191 mm||1215 mm||1244 mm||1268 mm|
|J Headtube length||110 mm||120 mm||130 mm||140 mm||150 mm|
|K BB height||344 / 352 mm||344 / 352 mm||344 / 352 mm||344 / 352 mm||344 / 352 mm|