YT

Jeffsy 29 Core 1 AL

$2,999Shimano Deore RD-M6100Gen Mk III

Gallery

Images

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Geometry

Geometry

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Frame geometry

GeometryLMSXLXXL
Stack627mm620mm613mm634mm642mm
Reach475mm455mm435mm495mm515mm
Headtube length116mm108mm100mm124mm132mm
Headtube angle65deg65deg65deg65deg65deg
BB height343mm343mm343mm343mm343mm
BB drop33mm33mm33mm33mm33mm
Trail
Fork length
Fork offset
Front center
Chainstay length437mm437mm437mm442mm442mm
Wheelbase1238mm1214mm1191mm1289mm
Top tube609mm593mm578mm627mm645mm
Standover height732mm728mm730mm738mm742mm
Seat tube length435mm410mm385mm460mm485mm
Seat tube angle77.9deg77.5deg76.9deg78.3deg78.6deg

Spec geometry

GeometryLMSXLXXL
Crank length170mm170mm170mm170mm170mm
Stem length50mm50mm50mm50mm50mm
Handlebar width780mm780mm780mm780mm780mm
Handlebar reach
Handlebar drop
Saddle width144mm144mm144mm144mm144mm
Dropper post travel170mm150mm125mm200mm200mm
Seatpost offset

Specs

Full specs

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Frame

Frame

YT frame (size S–XXL)

Suspension

Rear shock

Marzocchi Bomber Air (210x55mm, sweep adjust, custom tune, 0.6 spacer)

Fork

Marzocchi Bomber Z1 (29", 150mm, Rail 2.0 damper, 15x110mm, 44mm offset)

Brakes

Front brake

SRAM DB8 (Maxima Mineral Oil)

Rear brake

SRAM DB8 (Maxima Mineral Oil)

Front rotor

SRAM CenterLine 200mm

Rear rotor

SRAM CenterLine 200mm

Drivetrain

Shift levers

Shimano Deore SL-M6100-R (12-speed, Rapidfire Plus, 2-Way-Release)

Rear derailleur

Shimano Deore RD-M6100 (12-speed, Shadow+)

Cassette

Shimano Deore CS-M6100 (12-speed, 10-51T, Hyperglide+)

Chain

Shimano 12-speed chain

Crankset

Shimano FC-M512 (170mm, 32T)

Bottom bracket

Shimano BB-MT501 (BSA, 24mm)

Cockpit

Stem

YT Stem 35 (50mm, +/-0°, Black)

Handlebars

YT Handlebar (780mm width, 30mm rise, 8° backsweep, 6° upsweep, Black)

Grips

ODI Elite Motion V2.1 (lock-on)

Saddle

YT Saddle (YT Custom, 144mm width)

Seatpost

YT Seatpost (31.6mm; 125mm (S) / 150mm (M) / 170mm (L) / 200mm (XL, XXL))

Wheels & Tires

Front wheel

SunRingle SR329 Trail Comp (29", 30mm internal, 15x110mm, 6-bolt)

Rear wheel

SunRingle SR329 Trail Comp (29", 30mm internal, 12x148mm, 6-bolt, HG freehub)

Front tire

Maxxis Minion DHF (29x2.50, EXO+ casing, 3C MaxxTerra, Tubeless Ready)

Rear tire

Maxxis Minion DHR II (29x2.40, EXO+ casing, 3C MaxxTerra, Tubeless Ready)

Weight

Weight

16.50 kg / 36.37 lb (avg for smallest size, tubeless, no pedals or bottle)