Quiver

2018 Trek Roscoe vs 2018 Specialized Fuse 6Fattie/29

The M is the Specialized Fuse 6Fattie/29 size closest to your ML Trek Roscoe. We match frame stack and reach. This is a geometry comparison, not a fit recommendation; stem, spacers, handlebars and saddle setup also affect your riding position.

What changes on the Specialized Fuse 6Fattie/29

Compared with the Trek Roscoe in ML, the Specialized Fuse 6Fattie/29 in M places the top of the head tube 15 mm higher and 7 mm further back, relative to the bottom bracket. Its wheelbase is 13 mm shorter, which can contribute to quicker direction changes.

Frame stack
+15 mm
Higher front end
Frame reach
−7 mm
Shorter frame reach
Wheelbase
−13 mm
Shorter: quicker to change direction
Head angle
+0.2°
About the same head angle
Chainstays
−3 mm
Shorter: livelier

The two frames

2018 Trek Roscoe (ML) and 2018 Specialized Fuse 6Fattie/29 (M), lined up at the bottom bracketBoth frames drawn to scale. The Trek Roscoe is drawn in full with its measurements, and the Specialized Fuse 6Fattie/29 is the colored outline on top.J 1134

Trek Roscoe, MLSpecialized Fuse 6Fattie/29, MDrawn to scale and lined up at the bottom bracket.

Geometry side by side

MeasurementTrek Roscoe MLSpecialized Fuse 6Fattie/29 MDifference
Reach422415mm−7 mm
Stack607622mm+15 mm
Head tube angle68.3°68.5°+0.2°
Seat tube angle71.0°73°+2.0°
Effective top tube618605mm−13 mm
Chainstay length438435mm−3 mm
Wheelbase11341121mm−13 mm
BB drop5851mm−7 mm
BB height318317mm−1 mm
Standover741785mm+44 mm
Seat tube length444432mm−12 mm
Head tube length90100mm+10 mm
Fork lengthnot listed520mm

Differences are the Specialized Fuse 6Fattie/29 minus the Trek Roscoe. Full charts: 2018 Trek Roscoe, 2018 Specialized Fuse 6Fattie/29.

Where each sits in its class

Trek RoscoeSpecialized Fuse 6Fattie/29

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.

PartTrek Roscoe7Specialized Fuse 6Fattie/296Fattie/29
FrameTrek Alpha Goldnot listed
ForkRockShox JudySR Suntour XCM32
ShifterShimano Deore M6000SRAM X5
DerailleurShimano Deore M6000SRAM GX
CassetteShimano HG50not listed
ChainKMC X10KMC X-10
CranksetFSA Gamma ProSpecialized Stout
WheelsetFormula DC511not listed
TireSchwalbe Rocket Ron PerformanceSpecialized Ground Control
HubFormula DC-511, Formula DC2241Specialized Stout 110, Specialized Stout 141
RimSun Ringlé Duroc 40 SLSpecialized Stout 38 27.5
BrakeTektro M285Tektro Auriga
StemBontrager Rhythmnot listed
SeatpostBontrager SSRnot listed
SaddleBontrager Evoke 1.5Specialized Henge Comp
Handlebarnot listedSpecialized Stout
Gripsnot listedSpecialized Sip Grip

Know what is on every bike.

Add your bike to Quiver. Keep its parts, setup, and service history together, then share your build.

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