The Tern Quick Haul D8 (2025) is a city e-bike — representative silhouette: E-bike city. We have read 1 specification sheet (Tern Bicycles) and recorded 12 fit facts from it. 7 of the 16 measurements a city e-bike needs to answer fit questions are on file; 0 are confirmed by two independent sources. Where a measurement is missing, we say so below — we do not guess.
| Bottom bracket shell | Mid-drive motor (no conventional shell) |
|---|---|
| Front derailleur mount | No front derailleur mount (1x only) |
| Seatpost diameter | 31.6 mm |
| Seatpost shape | Round |
| Wheel size (ISO bead seat) | 20" / BMX (ISO 406) |
| Brake actuation | Hydraulic disc |
| Freehub body | Shimano HG, 8/9/10-speed body (also 11/12-speed MTB HG cassettes) |
| Rear speeds | 8 speeds |
| Shift actuation | Mechanical (cable) |
| Chain standard | 6 / 7 / 8-speed (7.1 mm) |
| Stem bar-clamp diameter (fitted stem) | 31.8 mm |
| Handlebar clamp diameter (fitted bar) | 31.8 mm |
Confidence: every fact above comes from a single cited source — "derived" on our lattice; none is verified by a second independent publisher yet. A verdict that rests on a safety-critical fact therefore stops at "unknown" rather than "fits".
Not on file (required for a city e-bike): Derailleur hanger · Rear axle spacing · Maximum tyre width (frame) · Front axle spacing · Brake mount, front · Brake mount, rear · Rotor interface (hubs) · Brake pad shape (fitted calipers) · Pedal thread. The sheet we read does not state them; until a source does, every fit question that needs one of these reads "unknown" — or "unknown — safety-critical" where a guess could hurt you.
- Why do so many verdicts on this bike read "unknown"?
- Because a verdict needs the bike's measurement for every dimension a part requires, and 9 of the 16 required measurements are not on file. "Unknown" means we could not check — not that it fits, and not that it does not.
- Will the verdicts change?
- Yes. When a second independent source confirms a measurement — or a first one states a missing one — the verdicts are recomputed from the new facts. Nothing on this page is typed by hand.