Quiver

2016 Surly Karate Monkey vs 2018 Specialized Fuse 6Fattie/29

The L is the Specialized Fuse 6Fattie/29 size closest to your xLarge (22) Surly Karate Monkey. 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 Surly Karate Monkey in xLarge (22), the Specialized Fuse 6Fattie/29 in L places the top of the head tube 8 mm higher and 5 mm further back, relative to the bottom bracket. Its wheelbase is 53 mm longer, which can contribute to stability at speed.

Frame stack
+8 mm
Higher front end
Frame reach
−5 mm
Shorter frame reach
Wheelbase
+53 mm
Longer: steadier at speed
Head angle
−3.5°
Slacker: calmer steering
Chainstays
+4 mm
Longer: more planted

The two frames

2016 Surly Karate Monkey (xLarge (22)) and 2018 Specialized Fuse 6Fattie/29 (L), lined up at the bottom bracketBoth frames drawn to scale. The Surly Karate Monkey is drawn in full with its measurements, and the Specialized Fuse 6Fattie/29 is the colored outline on top.J 1093

Surly Karate Monkey, xLarge (22)Specialized Fuse 6Fattie/29, LDrawn to scale and lined up at the bottom bracket.

Geometry side by side

MeasurementSurly Karate Monkey xLarge (22)Specialized Fuse 6Fattie/29 LDifference
Reach440.1435mm−5 mm
Stack628.2636mm+8 mm
Head tube angle72.0°68.5°−3.5°
Seat tube angle73.0°73°±0.0°
Chainstay length431.0435mm+4 mm
Wheelbase1093.01146mm+53 mm
BB drop68.051mm−17 mm
Standover853.5808mm−46 mm
Seat tube length558.8460mm−99 mm
Fork length468.0520mm+52 mm
Head tube length125.0115mm−10 mm
Effective top tubenot listed629mm
BB heightnot listed317mm

Differences are the Specialized Fuse 6Fattie/29 minus the Surly Karate Monkey. Full charts: 2016 Surly Karate Monkey, 2018 Specialized Fuse 6Fattie/29.

Where each sits in its class

Surly Karate MonkeySpecialized 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.

PartSurly Karate MonkeySpecialized Fuse 6Fattie/296Fattie/29
Forknot listedSR Suntour XCM32
Shifternot listedSRAM X5
Derailleurnot listedSRAM GX
Chainnot listedKMC X-10
Cranksetnot listedSpecialized Stout
Tirenot listedSpecialized Ground Control
Hubnot listedSpecialized Stout 110, Specialized Stout 141
Rimnot listedSpecialized Stout 38 27.5
Brakenot listedTektro Auriga
Handlebarnot listedSpecialized Stout
Gripsnot listedSpecialized Sip Grip
Saddlenot listedSpecialized Henge Comp

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