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On-One
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Jack Flash 29er

2020 On-One Jack Flash 29er Base

Category
Hardtail Trail MTB
Design
Moto/Klunker/Riser Bar, Hardtail (Front suspension)
Frame
Aluminum
Suspension
130mm fork travel
Features
Disc brake
MED
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Collection
I've Ridden
LRG
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Collection
I've Ridden
XLG
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Collection
I've Ridden
Somewhat aggressive stack and reachvs category
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Bar type unusual for category
This: Moto/Klunker/Riser Bar
Category: Flat Bar
vs category
Average stack and reachvs category
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Bar type unusual for category
This: Moto/Klunker/Riser Bar
Category: Flat Bar
vs category
Average stack and reachvs category
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Bar type unusual for category
This: Moto/Klunker/Riser Bar
Category: Flat Bar
vs category

Geometry

MED
LRG
XLG
Stack
609mm
628mm
641mm
Reach
440mm
460mm
480mm
Stack to Reach Ratio
1.38:1
1.37:1
1.34:1
Seat Tube Length, C-T
420mm
460mm
500mm
Top Tube Length, Effective/Horizontal Unknown
600mm
639.4mm
657.2mm
Top Tube Slope
20.3deg
17.6deg
14.5deg
Head Tube Angle
65deg
65deg
65deg
Seat Tube Angle
75deg
75deg
75deg
Head Tube Length
100mm
120mm
135mm
Bottom Bracket Drop
58mm
58mm
58mm
Bottom Bracket Height
312.7mm
312.7mm
312.7mm
Chainstay Length
445mm
445mm
445mm
Chainstay Length Horizontal
441.2mm
441.2mm
441.2mm
Front-Center
752mm
783mm
809mm
Front-Center Horizontal
749.8mm
781mm
807.4mm
Wheelbase
1191mm
1222.2mm
1248.6mm
Fork Offset/Rake
51mm
51mm
51mm
Trail
116.6mm
very high
116.6mm
very high
116.6mm
very high
Mechanical Trail
105.7mm
105.7mm
105.7mm
Wheel Flop
44.7mm
44.7mm
44.7mm
Tire to Pedal Spindle
211.3mm
170 mm cranks
242.3mm
170 mm cranks
268.3mm
170 mm cranks
Pedal Spindle to Ground Clearance
142.7mm
170 mm cranks
142.7mm
170 mm cranks
142.7mm
170 mm cranks

Base Build

MED
LRG
XLG
Wheel Size
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
Tire Width
2.35in
2.35in
2.35in
Tire Outer Diameter
741.4mm
741.4mm
741.4mm
Bike Length with Tires
1932.4mm
1963.6mm
1990mm
Crank Length
170mm
170mm
170mm
Handlebar Width
780mm
780mm
780mm
Stem Length
50mm
50mm
50mm
Stem Angle
7deg
7deg
7deg

Published Sizing Recommendations

Height
5 ft 7 in
to
5 ft 11 in
5 ft 10 in
to
6 ft 1 in
6 ft 0 in
to
6 ft 4 in

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 Scale
Category Trend
Hardtail Trail MTB
Source:https://www.planetx.co.uk/i/q/CBPXJFSX/planet-x-jack-flash-29er-sram-sx-mountain-bike
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