2026 BH SL1 4.5
- Category
- Performance Road
- Design
- Drop Bar, Rigid, non-suspension corrected
Geometry
XS | SM | MD | LA | XL | XXL | |
Stack | 517mm | 523mm | 549mm | 583mm | 594mm | 605mm |
Reach | 382mm | 383mm | 384mm | 386mm | 396mm | 403mm |
Stack to Reach Ratio | 1.35:1 | 1.37:1 | 1.43:1 | 1.51:1 | 1.5:1 | 1.5:1 |
Seat Tube Length, Unknown | 398mm | 433mm | 463mm | 493mm | 504mm | 520mm |
Top Tube Length, Effective/Horizontal Center | 510mm | 544mm | 557mm | 570mm | 586mm | 600mm |
Top Tube Slope | 15.3deg | 12.1deg | 11.6deg | 11.9deg | 11.7deg | 11.1deg |
Head Tube Angle | 71.8deg | 72deg | 73deg | 73deg | 73deg | 73.2deg |
Seat Tube Angle | 74.8deg | 72.5deg | 72.5deg | 72.5deg | 72deg | 71.8deg |
Head Tube Length | 108mm | 120mm | 150mm | 185mm | 196mm | 205mm |
Bottom Bracket Drop | 74.5mm | 65mm | 65mm | 65mm | 64.7mm | 64.5mm |
Bottom Bracket Height | 264.5mm | 274mm | 274mm | 274mm | 274.3mm | 274.5mm |
Chainstay Length | 410mm | 410mm | 410mm | 410mm | 410mm | 410mm |
Chainstay Length Horizontal | 403.2mm | 404.8mm | 404.8mm | 404.8mm | 404.9mm | 404.9mm |
Front-Center | 565mm | 577mm | 580mm | 593mm | 603mm | 603mm |
Front-Center Horizontal | 560.1mm | 573.6mm | 576.8mm | 589.5mm | 600.2mm | 602mm |
Wheelbase | 963.3mm | 978.4mm | 981.6mm | 994.3mm | 1005.1mm | 1006.9mm |
Fork Offset/Rake | 31mm | 39.7mm | 42.9mm | 43.2mm | 40.6mm | 34.3mm |
Fork Length (On-Axis) | 369mm | 369mm | 369mm | 369mm | 369mm | 369mm |
Trail | 78.8mm high | 68.4mm high | 58.8mm mid/neutral | 58.5mm mid/neutral | 61.2mm mid/neutral | 66.5mm high |
Mechanical Trail | 74.9mm | 65mm | 56.3mm | 56mm | 58.6mm | 63.7mm |
Wheel Flop | 23.4mm | 20.1mm | 16.5mm | 16.4mm | 17.1mm | 18.4mm |
Tire to Pedal Spindle | 56mm 170 mm cranks | 68mm 170 mm cranks | 71mm 170 mm cranks | 84mm 170 mm cranks | 94mm 170 mm cranks | 94mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 94.5mm 170 mm cranks | 104mm 170 mm cranks | 104mm 170 mm cranks | 104mm 170 mm cranks | 104.3mm 170 mm cranks | 104.5mm 170 mm cranks |
4.5 Build
XS | SM | MD | LA | 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 | 700C/29 in 622 mm BSD |
Tire Width | 28mm | 28mm | 28mm | 28mm | 28mm | 28mm |
Tire Outer Diameter | 678mm | 678mm | 678mm | 678mm | 678mm | 678mm |
Bike Length with Tires | 1641.3mm | 1656.4mm | 1659.6mm | 1672.3mm | 1683.1mm | 1684.9mm |
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
Performance RoadSource:www.bhbikes.com