Road endurance
J.Laverack J.ACK
2025 · 700c wheels · 8 sizes
Hand-crafted titanium four-season all-road disc frame with 12 mm thru-axles, clearance for 38 mm tyres (35 mm with mudguards) and optional rack and mudguard mounts, sold as a frameset or custom-built bike. Numbers are the stock geometry with the ÆRA AR Disc fork; bespoke geometry is also offered. J.Laverack's table lists the 52 front centre as 539.1 mm, the same as its effective top tube and out of line with the neighbouring sizes, so that figure is left out.
Source: www.jlaverack.co.uk/jack-frameset-build/
I ride:
Size run
Published geometry by size. How each size rides and fits for your rider profile loads with the page.
| Size | 48 | 50 | 52 | 54 | 56 | 58 | 60 | 62 |
|---|---|---|---|---|---|---|---|---|
| Stack (mm) | 521 | 532 | 553 | 572 | 584 | 598 | 612 | 624 |
| Reach (mm) | 358 | 364 | 370 | 376 | 382 | 388 | 394 | 400 |
| Head angle (°) | 70.5 | 71.0 | 71.5 | 71.5 | 71.5 | 72.0 | 72.0 | 72.5 |
| Seat angle (°) | 73.0 | 73.0 | 73.0 | 73.0 | 73.0 | 73.0 | 73.0 | 73.0 |