Hi Vicki — apologies, my first reply was stuck in 2024. The Avinox (DJI) side of things has moved on a lot, and there are now proper 800Wh integrated options in small sizes, so let me redo this properly.
Your brief, as I read it: Avinox motor, full 800Wh integrated (no range extender — you do long days), travel a touch longer rather than shorter, lighter than your Ransom eRIDE (~25kg), a small frame for 164cm, and keeping that planted, point-and-shoot feel you love.
The grounded shortlist:
• Forestal e-Siryon V2 — Avinox M2S, 800Wh integrated, 170mm rear / 174mm front, and crucially around 21.5kg. That's a genuine 3kg+ off your Ransom while keeping long travel. 64° head angle, 76.5° seat angle — slack and planted up front but steep enough to stop the front wandering on techy climbs. The F2 frame (S/M, ~460mm reach) suits 164cm. This is the one that hits "long travel AND properly lighter" best. Premium-priced, though.
• Teewing Flux — Avinox M2S, 800Wh, 180mm front / 178mm rear, high-pivot with an idler, ~22kg, and notably cheap at around £5,900. Closest thing to "Ransom on 40s but lighter and on Avinox" — the rearward axle path gives exactly that planted, plough-through-square-edges feel you don't want to lose. One caveat: the smallest frame I have data for is M (455mm reach), so check sizing for 164cm before committing.
• Mondraker Zendit — Avinox M2S, 800Wh, 170mm front / 165mm rear, ~22.8kg, around £7,400. The standout here is fit: a genuine S (436–440mm reach), and Mondraker's Forward Geometry gives DH-bike stability on descents without a sketchy slow-speed front end — exactly your "don't want it picking up on tech climbs" point. Rear travel is 165mm, so just shy of "longer", but the geometry does a lot.
• UNNO Mith Pro — Avinox M2S, 800Wh, 170mm front / 160mm rear, ~21.2kg, true S1 size (430mm reach, ~706mm standover). Lightest of the long-travel bunch and a real small size. Boutique pricing (~£11,500).
• Whyte Karve EVO — the UK option: Avinox M2S, 800Wh, 180mm front and rear, ~23.9kg, around £5,650. Long travel and good value, but the smallest size I have is M — confirm a small fits before anything else.
Ruled out, honestly: Forbidden's only Avinox bike is the Druid E, but it's 160/150mm — shorter than you want, so it's out for this brief (I was wrong to point you at a "Dreadnought E"; that doesn't exist as an Avinox bike). The Atherton S.170E nails the geometry (custom sizing, 180/170) but it's 700Wh only, so it fails your no-compromise 800Wh requirement. And the YT Decoy X is Avinox/800Wh but at ~25.4kg it's actually heavier than your Ransom — so it fails your single most important criterion and I'd skip it.
My pick for you: Forestal e-Siryon V2 if the budget allows — it's the only one that delivers genuinely long travel, full 800Wh, AND a big real-world weight saving over the Ransom, with planted geometry that won't fight you on climbs. If you want the same idea for roughly a third of the price and don't mind checking sizing, the Teewing Flux is the value play and arguably the most "Ransom-like" ride of the lot.
For your knees and wrists: all of these will be more comfortable than a 24.8kg Ransom simply through weight, but the Forestal and Teewing high-pivot platforms are the most planted and least harsh on repeated hits — which is what you actually want with sore joints on long, rough descents.
What's your budget ceiling? That splits this cleanly — Teewing/Whyte are sub-£6k, Mondraker mid, Forestal/UNNO premium — and I can narrow to one.