2024 Crumbworks Chunk Base
- Category
- Rigid MTB
- Design
- Swept Back Bar, Rigid, non-suspension corrected
- Frame
- Steel
- Fork
- Steel
- Features
- Disc brake
Geometry
M (50cm) | S (47cm) | L (54cm) | |
Stack | 617.4mm | — | — |
Reach | 399.3mm | — | — |
Stack to Reach Ratio | 1.55:1 | — | — |
Seat Tube Length, C-T | 500mm | 470mm | 540mm |
Top Tube Length, Effective/Horizontal Center | 620mm | 590mm | 660mm |
Head Tube Angle | 69deg | 69deg | 69deg |
Seat Tube Angle | 71deg | 71deg | 71deg |
Head Tube Length | 200mm | 185mm | 230mm |
Bottom Bracket Drop | 50mm | 50mm | 50mm |
Bottom Bracket Height | 313.1mm | 313.1mm | 313.1mm |
Chainstay Length | 470mm | 470mm | 470mm |
Chainstay Length Horizontal | 467.3mm | 467.3mm | 467.3mm |
Front-Center | 672.5mm | — | — |
Front-Center Horizontal | 670.7mm | — | — |
Wheelbase | 1138mm | — | — |
Fork Offset/Rake | 50mm | 50mm | 50mm |
Fork Length (Axle-To-Crown) | 410mm | 410mm | 410mm |
Trail | 85.8mm very high | 85.8mm very high | 85.8mm very high |
Mechanical Trail | 80.1mm | 80.1mm | 80.1mm |
Wheel Flop | 28.7mm | 28.7mm | 28.7mm |
Tire to Pedal Spindle | 139.4mm 170 mm cranks | — 170 mm cranks | — 170 mm cranks |
Pedal Spindle to Ground Clearance | 143.1mm 170 mm cranks | 143.1mm 170 mm cranks | 143.1mm 170 mm cranks |
Base Build
M (50cm) | S (47cm) | L (54cm) | |
Wheel Size | 650B/27.5 in 584 mm BSD | 650B/27.5 in 584 mm BSD | 650B/27.5 in 584 mm BSD |
Tire Width | 2.8in | 2.8in | 2.8in |
Tire Width Max | 2.8in | 2.8in | 2.8in |
Tire Outer Diameter | 726.2mm | 726.2mm | 726.2mm |
Bike Length with Tires | 1864.2mm | — | — |
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
Rigid MTBSource:https://www.crumbworks.jp/blank-3/chunk-pre-orders?lang=en