Quiver

2025 YT Jeffsy CORE vs 2024 Knolly Fugitive

The Knolly Fugitive size closest to your L is the S3. Compare the S3 instead

What changes on the Knolly Fugitive

Compared with the YT Jeffsy CORE in L, the Knolly Fugitive in S4 places the top of the head tube 9 mm higher and 17 mm further forward, relative to the bottom bracket.

Frame stack
+9 mm
Higher front end
Frame reach
+17 mm
Longer frame reach
Wheelbase
n/a
One of the bikes has no number for this
Head angle
−0.3°
About the same head angle
Chainstays
+1 mm
About the same

The two frames

2025 YT Jeffsy CORE (L)The YT Jeffsy CORE frame drawn to scale.J 1238

Only the YT Jeffsy CORE is drawn. The Knolly Fugitive numbers we have for size S4 are missing the wheelbase.

Geometry side by side

MeasurementYT Jeffsy CORE LKnolly Fugitive S4Difference
Reach475492+17 mm
Stack627636+9 mm
Head tube angle6564.75−0.3°
Seat tube angle77.276.75−0.5°
Chainstay length437438+1 mm
Wheelbase1238not listed
BB drop33not listed

Differences are the Knolly Fugitive minus the YT Jeffsy CORE. Full charts: 2025 YT Jeffsy CORE, 2024 Knolly Fugitive.

Where each sits in its class

YT Jeffsy COREKnolly Fugitive

AggressivePositionUpright
CalmSteeringQuick
PlayfulBalancePlanted

Each bike is ranked against the other trail bikes on Quiver, on frame geometry alone. Not your hand position or ride feel.

What each ships with

The stock build of each bike's first listed trim. Parts that match are dimmed.

PartYT Jeffsy CORECORE 1Knolly Fugitive125 XT
ForkMarzocchi Bomber Z1Fox FLOAT X Factory
Rear shockMarzocchi Bomber AirFox Float X Factory
ShifterShimano DeoreShimano XT
DerailleurShimano DeoreShimano XT
CassetteShimano Deore M6100Shimano XT
CranksetShimano Deore M512Shimano XT
Bottom bracketShimano MT501not listed
WheelsetSun Ringlé SR329 Trail CompDT Swiss M1900
TireMaxxis Minion DHF, Maxxis Minion DHR II DDMaxxis Assegai
BrakeSRAM DB8 StealthShimano Deore XT
HandlebarYT Handlebar 35Spank Spoon
StemYT Stem 35not listed
GripsODI Elite Motion V2.1not listed
HeadsetCane Creek Series 10FSA Orbit
SeatpostYT Seatpostnot listed
SaddleYT Custom Designnot listed
Framenot listedKnolly Fugitive
Rotornot listedShimano SM-RT76

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