Quiver

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

The Specialized Fuse 6Fattie/29 size closest to your Medium (18) is the M. Compare the M instead

What changes on the Specialized Fuse 6Fattie/29

Compared with the Surly Karate Monkey in Medium (18), the Specialized Fuse 6Fattie/29 in S places the top of the head tube 20 mm higher and 20 mm further back, relative to the bottom bracket. Its wheelbase is 36 mm longer, which can contribute to stability at speed.

Frame stack
+20 mm
Higher front end
Frame reach
−20 mm
Shorter frame reach
Wheelbase
+36 mm
Longer: steadier at speed
Head angle
−3.0°
Slacker: calmer steering
Chainstays
+4 mm
Longer: more planted

The two frames

2016 Surly Karate Monkey (Medium (18)) and 2018 Specialized Fuse 6Fattie/29 (S), 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 1065

Surly Karate Monkey, Medium (18)Specialized Fuse 6Fattie/29, SDrawn to scale and lined up at the bottom bracket.

Geometry side by side

MeasurementSurly Karate Monkey Medium (18)Specialized Fuse 6Fattie/29 SDifference
Reach415.1395mm−20 mm
Stack602.5622mm+20 mm
Head tube angle71.5°68.5°−3.0°
Seat tube angle73.0°73°±0.0°
Chainstay length431.0435mm+4 mm
Wheelbase1064.91101mm+36 mm
BB drop68.051mm−17 mm
Standover792.7755mm−38 mm
Seat tube length457.2373mm−84 mm
Fork length468.0520mm+52 mm
Head tube length100.0100mm±0 mm
Effective top tubenot listed585mm
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

Know what is on every bike.

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

Explore the app
A Transition Relay build sheet: frame, fork, shock and drivetrainThe Relay’s ride photo galleryThe Relay’s ride spectrum and 2D frame geometryThe garage: five bikes and 99 recorded partsA Specialized Tarmac SL8 road build sheet