Reason Air 2027

The Megamo Reason Air 2027 is the Spanish brand's full-carbon trail eMTB flagship: 140 mm of travel front and rear, the DJI Avinox M2S motor at 150 Nm of torque and 1500 W peak, an integrated 800 Wh IP56-rated battery, and a class-leading claimed 20.05 kg total weight. With nine size options across S–XL (some at two different head-angle settings), this is one of the most fit-flexible carbon trail eMTBs on sale. At €11,999 for the CRB 05 top trim it sits in premium territory and squares up against Pivot Shuttle SL, Specialized Levo SL Gen 2 and lightweight Avinox builds.

Drive system and range. Avinox M2S delivers 150 Nm of torque (130 Nm sustained, 150 Nm in Boost), 1500 W peak and a 2.63 kg unit weight — the most powerful current motor in this database. On a 20 kg trail platform with 140 mm travel that combination is properly transformative: @Rob Rides EMTB on the 160 mm Reason sibling described it as "a rocket" on the first ride. The 800 Wh battery is integrated (not removable) and IP56-rated for ingress protection. Real-world range on M2S with 800 Wh consistently lands at 1,500–2,200 m of climbing per charge depending on assistance and rider weight. The Reason's CRB 05 is the carbon-platform flagship; @empty notes that 2027-model Reason AL05 builds use the same M2S motor.

Geometry and handling. The Reason Air gives buyers an unusual luxury: two head-angle settings via flip-chip (63.5° or 64.5°) across multiple sizes. Reach is generous and well-progressed: 442 mm (S) through 481 mm (M), 511 mm (L) and 514 mm (XL), with sub-variants between. Chainstays grow proportionally from 449 mm (S) to 458 mm (L/XL) — a thoughtful nod to size-balanced rear-centre that many rivals miss. Wheelbase grows 1,223–1,334 mm. The 4-bar ASP suspension is Megamo's proven design. @Lawsoc picks out the Reason Air alongside Orbea Rise and Unno Mith as bikes with low standover, suitable for shorter riders.

Build and value. Only the €11,999 CRB 05 trim is gold-listed at the carbon flagship level: FOX 36 Float SL Performance fork (140 mm), FOX Float Performance shock, Shimano XT 4-piston brakes with 203 mm rotors, SRAM Transmission 12-speed (Eagle 90 or AXS). Rob notes the broader Reason line spans £4,999 alloy through £11,499 carbon top-end; the Reason Air carbon is positioned as the trail-focused version of the proven Reason platform. @garethld ordered a CRB03 (mechanical XT) at a meaningfully lower price.

Community-verified strengths. The Reason platform has impressed across the forum. @Toomanybikesnotenoughlegs calls the 160 mm Reason sibling capable enough "from single track and forest roads to Lake District and bike parks without feeling under-suspended" — the Air's 140 mm travel will trade some of that capability for sub-20 kg weight. @deertrackdoctor notes UK dealer presence is meaningfully growing — three Megamo dealers within 90 minutes drive at the time of his post, including Pedals in Dunfermline. The Avinox motor's seamless OTA-update ecosystem is well-regarded.

Caveats and known gripes. @Rob Rides EMTB identifies multiple cons that broadly apply across the Reason range: stock EXO casing tyres are too light for serious use, 35 mm stem is twitchy (50 mm is recommended), headset cable routing adds maintenance overhead, non-removable battery limits big-day workflows, the flip-chip geometry change is mild rather than transformative, 20 mm bar rise is short for larger sizes, and size Large runs more like XL. @Rando_12345 reports BB height is too low for technical climbing on rocky singletrack on the broader Reason platform. @simonali19 notes the bike weighs significantly more than comparable analogue full-suspension bikes (around 10 kg reference) and is harder to load into a vehicle. @Watty defends headset routing as a minor service issue. The 140 mm travel limits aggressive bike-park use.

Verdict. The Megamo Reason Air is one of the most desirable lightweight carbon trail eMTBs of 2027: sub-20 kg, Avinox M2S power, flip-chip geometry adjustability, and nine size options including dual head-angle settings. It will suit riders who want the latest 150 Nm Avinox punch in a manageable 140 mm trail package and value Megamo's growing UK dealer network. Buyers wanting longer travel, removable batteries, lighter stock tyres, or established big-brand dealer support should look at Trek Fuel EXe, Specialized Levo SL Gen 2 or the Megamo Reason 160 mm sibling. Production status: current.