2018 Specialized Bicycles Stumpjumper Comp Alloy 29
- Design
- Flat Bar, Full suspension
- Frame
- Aluminum
- Fork
- Aluminum
- Suspension
- 150mm fork travel, 135mm rear travel, 20% sag
- Features
- Disc brake
Geometry
S | M | L | XL | XXL | |
Stack | 617mm | 617mm | 645mm | 663mm | 686mm |
Reach | 389mm | 417mm | 435mm | 461mm | 477mm |
Stack to Reach Ratio | 1.59:1 | 1.48:1 | 1.48:1 | 1.44:1 | 1.44:1 |
Seat Tube Length, Unknown | 396mm | 430mm | 468mm | 523mm | 564mm |
Top Tube Length, Effective/Horizontal Center | 551mm | 582mm | 611mm | 647mm | 674mm |
Top Tube Slope | 25.4deg | 20.8deg | 19.1deg | 14.8deg | 12.8deg |
Head Tube Angle | 67.5deg | 67.5deg | 67.5deg | 67.5deg | 67.5deg |
Seat Tube Angle | 74deg | 74deg | 75deg | 75deg | 75deg |
Head Tube Length | 125mm | 145mm | 170mm | 171.5mm | 171.5mm |
Bottom Bracket Drop | 36mm | 36mm | 36mm | 36mm | 36mm |
Bottom Bracket Height | 333.4mm | 333.4mm | 333.4mm | 333.4mm | 333.4mm |
Chainstay Length Horizontal | 437mm | 437mm | 437mm | 437mm | 437mm |
Front-Center | 679mm | 706.9mm | 735.9mm | 769.8mm | 795.8mm |
Front-Center Horizontal | 680mm | 708mm | 738mm | 771mm | 797mm |
Wheelbase | 1115mm | 1143mm | 1172mm | 1206mm | 1232mm |
Fork Offset/Rake | 46mm | 46mm | 46mm | 46mm | 46mm |
Fork Length, Unknown | 551mm | 551mm | 551mm | 551mm | 551mm |
Trail | 103.2mm very high | 103.2mm very high | 103.2mm very high | 103.2mm very high | 103.2mm very high |
Mechanical Trail | 95.4mm | 95.4mm | 95.4mm | 95.4mm | 95.4mm |
Wheel Flop | 36.5mm | 36.5mm | 36.5mm | 36.5mm | 36.5mm |
Standover Height | 750mm | 757mm | 766mm | 776mm | 778mm |
Tire to Pedal Spindle | 139.5mm 170 mm cranks | 167.5mm 170 mm cranks | 196.5mm 170 mm cranks | 230.4mm 170 mm cranks | 256.4mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 163.4mm 170 mm cranks | 163.4mm 170 mm cranks | 163.4mm 170 mm cranks | 163.4mm 170 mm cranks | 163.4mm 170 mm cranks |
Comp Alloy 29 Build
S | M | L | XL | XXL | |
Wheel Size | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD |
Tire Width | 2.3in | 2.3in | 2.3in | 2.3in | 2.3in |
Tire Width Max | 2.6in | 2.6in | 2.6in | 2.6in | 2.6in |
Tire Outer Diameter | 738.8mm | 738.8mm | 738.8mm | 738.8mm | 738.8mm |
Bike Length with Tires | 1853.8mm | 1881.8mm | 1910.8mm | 1944.8mm | 1970.8mm |
Crank Length | 170mm | 170mm | 170mm | 170mm | 170mm |
Handlebar Width | 780mm | 780mm | 780mm | 780mm | 780mm |
Stem Length | 45mm | 60mm | 60mm | 60mm | 60mm |
Stack and Reach vs. Category Trend
Very Upright
Somewhat Upright
Average
Somewhat Aggressive
Very Aggressive
The Bike Insights Upright/Aggressive scale is based on analysis of a bike’s proportions relative to similar sized bikes in the same category.
Learn more about the Upright/Aggressive ScaleCategory Trend
Full-suspension All-mountain/Enduro MTBSource:https://www.specialized.com/us/en/stumpjumper-comp-alloy-29-6fattie/p/129073?color=240010-129073