Corrections and Humble Pie
Right, so the previous post contained geometry figures that were, to use the technical term, wrong. The PR Carbon was listed as 64.1° head angle when both PR variants are actually 64.5°. The effective seat tube angle was also off. More embarrassingly, I completely failed to mention that all four bikes have a proper multi-position geometry adjust system — which is rather like reviewing a Swiss Army knife and forgetting to mention the blades. The community rightly pointed this out, so here's the corrected version with actual numbers from the actual specification documents.
| Spec (Size L) | PX Carbon / Pro | PR Carbon | PR Carbon Pro |
| Head Angle (stock) | 64.2° (±1°, ±0.5°) | 64.5° (±1°, ±0.5°) | 64.5° (±1°, ±0.5°) |
| Actual Seat Angle | 72° | 70° | 70° |
| Effective Seat Angle | 78° | 76.9° | 76.9° |
| Reach | 478mm | 475mm | 475mm |
| Stack | 632.2mm | 637mm | 637mm |
| BB Height | 345.5mm | 353.1mm | 349.5mm |
| BB Height (2 pos.) | 345 / 349mm | 349 / 353mm | 349 / 353mm |
| Chainstay (4 pos.) | 438–451mm | 440–452mm | 440–452mm |
| Fork Length | 570mm | 585mm | 576mm |
| Fork Travel | 160mm | 160mm | 160mm |
| Rear Travel | 150mm | 150mm | 150mm |
| Motor | Avinox M2S | Avinox M2 | Avinox M2S |
| Battery | FP700 (integrated) | RS800 (removable) | RS800 (removable) |
What the Numbers Actually Mean
The PX is the more aggressive geometry — 0.3° slacker head angle, significantly steeper effective seat tube (78° versus 76.9°), and a lower bottom bracket. Travel is identical across all four models (160mm fork, 150mm rear), so the geometry differences are doing all the work here. That 2° difference in effective seat angle puts you noticeably further over the pedals on the PX, which makes sense given it's intended for people who actually want to climb efficiently rather than merely survive the ascent.
The PR's geometry is more traditional enduro: slightly taller BB for ground clearance on chunky terrain, slacker actual seat angle for descending comfort when the saddle's dropped. If your local trails involve more roots and rocks than flow features, the PR geometry makes more sense. If you're doing high-mileage days with proper climbing, the PX's steeper STA will save your lower back.
One detail worth noting:
PR Carbon and PR Carbon Pro share identical main triangle geometry. Same reach, same stack, same head angle, same seat angle. The differences are fork length (585mm base versus 576mm Pro), component spec, and — critically — the geometry adjust range, which brings us to...
The Geometry Adjust System — 40 Combinations Per Bike
This is the section that needs the biggest rewrite, because what Amflow has built is considerably more impressive than a standard flip chip.
All four bikes use
three independent adjustment mechanisms that together give 40 distinct geometry configurations:
Head tube angle — 5 positions via adjustable headset cups:
- PX: 63.2° / 63.7° / 64.2° (stock) / 64.7° / 65.2°
- PR: 63.5° / 64.0° / 64.5° (stock) / 65.0° / 65.5°
That's a full 2° range on the head angle alone. The difference between 63.2° and 65.2° is the difference between a full-on enduro sled and a trail bike that actually wants to climb. On the same frame.
Chainstay length — 4 positions:
- PX: four positions spanning 438mm to 451mm
- PR: four positions spanning 440mm to 452mm
Shorter stays tighten up handling and make the rear end snap around corners. Longer stays add stability at speed and improve traction on technical climbs. Four positions gives meaningful steps across that range, not just two arbitrary extremes.
Bottom bracket height — 2 positions:
- PX: 345mm (low) or 349mm (high)
- PR: 349mm (low) or 353mm (high)
Low for planting the bike in corners and lowering the centre of gravity. High for ground clearance on chunky terrain.
5 × 4 × 2 = 40 combinations, and this applies to
all four models equally. The base PR Carbon gets the full system, the same as the Pro. This is not a stripped-down token gesture on the cheaper bikes — it's the same adjustable platform across the range.
Dual 29" Compatibility
All models ship as mullet (29" front, 27.5" rear) but can accept a 29" rear wheel. Fitting a 29" rear raises the bottom bracket by approximately 19mm, which makes the effective seat angle slightly slacker and the effective head angle slightly steeper. Most riders stick with the stock mullet configuration — the smaller rear wheel improves agility and keeps the BB from getting too high — but the option exists if you prefer the rolling efficiency and traction of matched wheel sizes. Worth considering if you're building up a second wheelset anyway.
Motor, Battery, and the Hidden Charger Problem
The motor split is straightforward: the base PR Carbon gets the Avinox M2 (1100W / 110Nm continuous, peaks at 1100W / 125Nm, 2.65kg). Everything else — both PX variants and the PR Carbon Pro — gets the Avinox M2S, which uses hairpin flat wire windings for 1300W / 130Nm continuous, peaking at 1500W / 150Nm, and actually weighs slightly less at 2.60kg. The M2S offers 800% maximum assist.
Battery architecture differs by platform. The PX uses an integrated FP700 (700Wh, 220 Wh/kg density), while both PR variants use the removable RS800 (800Wh, 200 Wh/kg). The obvious assumption is that bigger battery equals better, but there's a nuance here: the FP700's integration allows superior thermal management. In sustained power testing, the FP700 shows almost zero derating over 15 minutes while the RS800 begins derating around the 10-minute mark. So the PX can actually sustain M2S peak power longer despite the smaller capacity.
Now for the spec that most buyers miss entirely:
the base PR Carbon ships with a 4A / 168W charger. That's roughly 4.75 hours for a full charge. The PR Carbon Pro, PX Carbon, and PX Carbon Pro all include the 12A / 508W fast charger, which hits 80% in around 1.4-1.6 hours. If you're buying the base PR Carbon and planning shuttle days or multi-ride weekends, budget for the fast charger upgrade or prepare to schedule your life around charge times.
Component Differences
| Component | PX Carbon | PX Carbon Pro | PR Carbon | PR Carbon Pro |
| Shifter | SRAM S1000 Eagle AXS Pod | SRAM X0 Eagle AXS Rocker | SRAM S1000 Eagle AXS Pod | SRAM X0 Eagle AXS Rocker |
| Cassette | XS-1270 10-52T | XS-1295 | XS-1270 10-52T | XS-1295 |
| Fork | FOX 36 Performance MY2027 GRIP | FOX 36 Factory MY2027 GRIP X2 | FOX 36 Performance | FOX 36 Factory |
| Shock | FOX Float X Performance MY2027 | FOX Float X Factory MY2027 LSC+LSR | FOX Float X Performance | FOX Float X Factory |
| Brakes | Magura Gustav Pro 203mm | Magura Gustav Pro 203mm | SRAM (unspecified) | SRAM (unspecified) |
| Wheels | Amflow XMA-30 alloy | Amflow XMC-30 carbon | Alloy | Alloy |
| Front Tyre | Schwalbe Magic Mary 29×2.5 | Schwalbe Magic Mary 29×2.5 | Maxxis Assegai 29×2.5 | Schwalbe Magic Mary 29×2.5 |
| Rear Tyre | Schwalbe Albert 27.5×2.5 | Schwalbe Albert 27.5×2.5 | Maxxis Dissector 29×2.4 | Schwalbe Albert 27.5×2.5 |
| Dropper | Wired | Wireless actuator | Wired | Wired |
All four models use the Avinox SL Crank (155mm on M/L, 160mm on XL/XXL) and include VP adjustable dropper shims. All support SmoothShift — the motor-assisted gear change feature that helps shift during coasting via the AXS controller.
The PX models get the 2027 Fox suspension with updated dampers, Magura Gustav Pro brakes with 203mm rotors and 2.5mm thickness, and Amflow's own wheels. The Pro versions across both platforms get Fox Factory suspension, X0 shifters, and the XS-1295 cassette.
Who Should Buy What
PR Carbon makes sense if you want the removable battery for genuine backcountry flexibility (spare battery in the pack, charge at the cafe, etc.) and don't need the maximum power output. You get the full 40-combination geometry adjust system same as every other model. The slow charger and M2 motor are the real trade-offs, not the adjustability.
PR Carbon Pro is the one to get if you want removable battery convenience with the full M2S power and fast charging. The geometry system is identical to the base model — same 40 combinations. The upgrade is motor, charger, suspension spec, and drivetrain.
PX Carbon suits riders who prioritise climbing efficiency and sustained power delivery over battery swappability. The integrated FP700's thermal performance, steep seat angle, and proper geometry adjust range make this the better all-day trail bike. You sacrifice 100Wh of capacity but gain real-world sustained output.
PX Carbon Pro is the no-compromises option if the PX geometry suits your riding. Carbon wheels, wireless dropper, Factory suspension, and the best power delivery in the lineup. Whether that's worth the premium over the PX Carbon depends entirely on how much you value 300g of rotating weight savings and adjustable low-speed compression.
The hidden differentiators to remember: base PR Carbon has a slow charger and the M2 (not M2S) — those are the real compromises, not the geometry system which is excellent across all four models. PR Carbon Pro fixes both of those. PX variants integrate the battery and gain sustained power delivery at the cost of swappability. Choose based on whether "battery in, battery out" matters more than "full power for the entire descent."
But now you must have felt very guilty to put so much details on the table that we may have to sent it through ChatGPT for a executive summary! 
