Overview
This product is best for: Trail riders looking for a full-suspension electric mountain bike with balanced handling, modern geometry and long-range battery capacity.
The main advantage is: Combining the Avinox M2S drive system, 800Wh battery and 140mm trail-focused suspension platform.
Choose this if: You want a capable electric trail bike for technical singletrack, climbing and all-day mountain riding.
This product is not ideal for: Riders seeking a dedicated enduro bike with longer suspension travel.
The Megamo Reason Air AL 05 is a full-suspension electric mountain bike designed around Megamo's trail-focused Reason Air platform. Featuring 140mm travel, the Avinox M2S motor system, an 800Wh integrated battery and SRAM Eagle T-Type drivetrain technology, it delivers a capable balance of climbing support, descending confidence and long-distance riding capability.
Best For
Trail riding, technical singletrack, mountain adventures, all-day rides, natural trails and mixed-terrain exploration.
Who Is This For
Ideal for riders wanting a modern electric trail bike with long battery capacity, capable suspension and wireless-ready drivetrain technology.
Rider Profile
Suitable for trail riders who prioritise efficient climbing, responsive handling and confidence across varied terrain.
Key Features
- Reason Air AL alloy frame
- Avinox M2S drive system
- 800Wh integrated battery
- 140mm wheel travel
- Fox 36 Float SL Performance fork
- Fox Float Performance rear shock
- SRAM Eagle T-Type drivetrain
- Shimano XT 4-piston brakes
- 29-inch wheel platform
- Full-colour OLED touchscreen display
Real-World Performance
The 140mm suspension platform provides an efficient balance between climbing performance and descending control. Fox Performance suspension components help maintain traction and composure across technical trail features.
The Avinox M2S motor and 800Wh battery support longer rides and repeated climbing efforts while the SRAM Eagle T-Type drivetrain is designed to handle demanding trail riding conditions.
Usage Scenarios
Trail centres, natural singletrack, mountain routes, technical climbs, long-distance trail rides and weekend adventures.
Comparison
Compared with longer-travel enduro-focused eMTBs, the Reason Air AL 05 prioritises trail efficiency and versatility. Compared with hardtail eMTBs, it offers increased comfort and control through its full-suspension design.
Comparison Within The Range
Lower Model:
Reason Air AL entry-level models — alternative specifications within the same trail platform.
Current Model:
Megamo Reason Air AL 05 — 140mm travel, Avinox power and SRAM Eagle T-Type drivetrain.
Higher Model:
Megamo Reason AL 07 — longer-travel platform aimed at more demanding terrain.
Buy this if: You want a versatile trail eMTB with long battery capacity and balanced suspension travel.
Choose a lower model if: You want a simpler component specification.
Upgrade if: You ride more demanding terrain requiring increased suspension travel.
Pros and Cons
Pros: 800Wh battery, Fox Performance suspension, SRAM Eagle T-Type drivetrain, Shimano XT brakes and 29-inch wheels.
Cons: Less suspension travel than Megamo's more enduro-focused Reason models.
Quick Spec Summary
Brand: Megamo
Model: Reason Air AL 05
Category: Full Suspension Electric Mountain Bike
Motor: Avinox M2S
Battery: Avinox 800Wh
Travel: 140mm
Drivetrain: SRAM Eagle T-Type 12-Speed
Wheel Size: 29 Inch
Detailed Specifications
Frame: Reason AL Frame, Alloy Shock Extension, Full Integrated Battery, 12x148 Boost, Megamo ASP
Wheel Travel: 140mm
Fork: Fox 36 Float SL Performance, 140mm Travel, Grip Damper
Rear Shock: Fox Float Performance, 210x47.5mm, Evol LV, Low Speed Rebound, 2 Position
Headset: Acros AZA-288R2 ZS56 Blocklock 135°
Motor: Avinox M2S
Motor Output: 130Nm / 1300W
Boost Mode: 150Nm / 1300W
Battery: Avinox 800Wh, 35.9V, IP56
Display: Avinox DP100, 2-inch Full-Colour OLED Touchscreen, 800 Nits, 326ppi
Charger: Avinox 4A Charger
Rear Derailleur: SRAM 90 Eagle T-Type 12-Speed
Shifters: SRAM 90 Eagle T-Type
Crankset: SRAM Eagle T-Type Avinox Chainring 36T 12-Speed, Crankset 160mm
Cassette: SRAM XS-1270 T-Type, 10-52T
Brakes: Shimano XT M8220 Hydraulic Disc 4-Piston
Rotors: Shimano SM-RT86 203mm
Front Tyre: Maxxis New Dissector 29 x 2.4 EXO+ 3C MaxxGrip
Rear Tyre: Maxxis New Dissector 29 x 2.4 DD 3C MaxxTerra
Wheels: Megamo 29 SL 30 ASY Aluminium Rim, 15x110 / 12x148mm
Handlebar: Megamo Alloy Butted 35 x 800mm, 12mm Rise, 6° Back Sweep
Stem: Satori Ursa, 35 x 35mm
Seatpost: Megamo Ø31.6mm
Saddle: Selle Royal SRX Open
Is This The Right Product
Choose this bike if you want a modern trail-focused eMTB with 140mm travel, long battery capacity and capable component specifications.
Who should not buy this: Riders specifically looking for a long-travel enduro-focused eMTB platform.
Upgrade Potential
The Reason Air AL 05 already includes Fox suspension, Shimano XT brakes and SRAM Eagle T-Type drivetrain technology, providing a strong platform for long-term ownership.
What You'll Need
Consider pairing the bike with a trail helmet, hydration pack, rider protection equipment and essential trail tools.
Alternative Products
Looking for a simpler option?
Reason Air entry-level models offer the same trail-focused platform with different component specifications.
Want more suspension travel?
Megamo Reason AL 07 — 160mm travel platform for more demanding terrain.
Building a complete setup?
Professional Bike Fitting Service — optimise comfort, control and riding position.
Our Take
The Reason Air AL 05 combines trail-focused suspension travel, long-range battery capacity and the Avinox drive system into a versatile electric mountain bike platform.
FAQ
What motor does the Reason Air AL 05 use?
It uses the Avinox M2S drive system.
What battery capacity does it have?
An Avinox 800Wh battery.
How much travel does it have?
140mm wheel travel.
What drivetrain is fitted?
SRAM Eagle T-Type 12-speed.
What brakes are fitted?
Shimano XT M8220 four-piston hydraulic disc brakes.
What wheel size does it use?
29-inch wheels.
What display is fitted?
An Avinox DP100 OLED touchscreen display.
Is it suitable for trail riding?
Yes, it is designed specifically for trail-focused mountain biking.
Can I get sizing support?
Yes, through our Online Bike Sizing Calculator and Professional Bike Fitting Service.
Is Click & Collect available?
Yes, Click & Collect is available from CycloMonster.
Ownership Experience
The combination of Fox suspension, Avinox power delivery and SRAM T-Type drivetrain technology provides a capable platform for regular trail riding and mountain adventures.
Local Riders
If you're searching for a bike shop near Derby for electric mountain bikes, CycloMonster in Derby DE21 7LX offers local support, Click & Collect and expert eMTB advice for riders across Nottingham, Burton upon Trent, Loughborough and Chesterfield.
Local Availability
Visit in-store for local support, workshop services, bike setup assistance and Click & Collect options.
Bike Sizing Guidance
Choosing the correct bike size improves comfort, handling and efficiency.
Manufacturer rider-height recommendations are not currently published for this model.
Use our Online Bike Sizing Calculator for the most accurate recommendation.
For personalised support visit our Professional Bike Fitting Service.
Why Buy
Choose the Megamo Reason Air AL 05 if you want a trail-focused electric mountain bike with 140mm travel, an 800Wh battery and modern Avinox drive system technology.
Ready For Your Next Trail Adventure?
Order the Megamo Reason Air AL 05 today or visit CycloMonster for expert eMTB advice, bike fitting support and setup guidance.