HELIX A1
Jamis
Crosscountry
HELIX A1 is an alloy cross-country mountain bike (2024), from Jamis, part of the Helix family. This model is best for a wide range of riders thanks to its fit flexibility, leaning toward a balanced riding position, while being best for smoother trails and efficient rolling. The main strengths in the metrics are strong value-for-money versus many similar bikes, strong climbing friendliness for sustained uphill riding, and good fit flexibility for dialing in rider position. Compared with more specialized alternatives, the compromise is a firmer ride feel than comfort-first options. Add this bike to compare on MatchBikes.com and see how it stacks up against similar cross-country models.
Rating

Score Summary
Performance
Built for speed and efficiency
Fit
Dialed-in Fit & Comfort
Value
Specifications
General
Frame
Drivetrain
Wheels
Brakes
Cockpit
Seat
Geometry
| Measurement | 14" | 16" | 18" |
|---|---|---|---|
| Bottom Bracket Height | 309 mm | 309 mm | 309 mm |
| Front Center | 598 mm | 619 mm | 639 mm |
| Top Tube Length | 540 mm | 560 mm | 580 mm |
| Seat Tube Angle | 72.5 ° | 72.5 ° | 72.5 ° |
| Seat Tube Length | 356 mm | 406 mm | 457 mm |
| Head Tube Angle | 70 ° | 70 ° | 70 ° |
| Head Tube Length | 105 mm | 110 mm | 120 mm |
| Chainstay Length | 435 mm | 435 mm | 435 mm |
| Wheelbase | 1029 mm | 1050 mm | 1070 mm |
| Bottom Bracket Drop | 46 mm | 46 mm | 46 mm |
| Standover Height | 668 mm | 704 mm | 731 mm |
| Wheels | 27" | 27" | 27" |




























































