The Reason CRB 05 is built to go big carbon frame, 160mm Fox suspension, and DJI Avinox motor with 120Nm torque. With SRAM Eagle 90 gearing, XT M8220 4 pot brakes, and an 800Wh battery.

Megamo

Megamo Reason CRB 05 Carbon Avinox E.Mountain Bike - Orange

£7,099.00

Size Guide

Megamo Reason CRB 05 Carbon Avinox E.Mountain Bike - Black

Megamo Reason CRB 05 Carbon Avinox E.Mountain Bike - Blue

Pre-Order

With Pre-Order, you can purchase the latest items added to our store in advance of them arriving with us.

Your Pre-Order is prioritised (at no additional charge); meaning that as soon as the product arrives with us, we can wrap it straight back up; ready for collection via Click & Collect or despatch to you — it often never even hits the stock room shelves!

Pre-Launch

With Pre-Launch, the date when we expect to receive the product ourselves is still a little too hazy to be confident in accepting Pre-Orders.

So, instead, you can submit your email address against the item you are interested in and we will email you as soon as stock arrives on the system.

Estimated Delivery & Collection Dates

Estimated Delivery & Collection Dates are given on Pre-Order and Pre-Launch products. They are for indication purposes only and can change at any time without notice.

The dates we provide are based on indications given by our suppliers. Whenever we get updated information from our suppliers we will endeavour to update the Estimated Delivery & Collection Dates provided on product pages.

We estimate this will be ready for despatch to you or collection via Click & Collect on Undetermined

Megamo Reason CRB 05 Carbon Avinox E.Mountain Bike - Orange

Season:2026

Brand:Megamo

Code:MG37005ORG

The Reason CRB 05 running Megamo's high level carbon, and a set of components ready to tackle the biggest days out as often as you like.

Designed to offer the perfect balance between reduced weight and high-level performance. Choose between the strength of aluminum or the reactive lightness of carbon. Its adjustable geometry and optimized kinematics ensure agility, control, and efficiency across all types of terrain. Thanks to DJI's Avinox system, you’ll enjoy powerful and smooth assistance, ideal for both demanding climbs and technical descents. A light, precise, and rider-adaptable e-bike.

DJI Avinox M1 Motor -120Nm 1000W (Boost mode) / 105Nm 1000W
Integrated 800 Wh LI-ION battery
Hi-Res Oled touch screen
GPS and Sim enabled security tracking
Reason Full Carbon frame, Boost, 160 mm wheel travel
Fox 36 Performance fork with 160 mm travel
Fox Float X Performance shock
Sram 90 Eagle drivetrain, 12-speed
Shimano XT 4-piston hydraulic disc brakes
Megamo SL 30 Alloy Wheel Set

The REASON is redefining the e-bike category with a high-performance frame that´s both lightweight and engineered with unbeatable kinematics. It absorbs vibrations without sacrificing responsiveness and delivers agility, control and precision at all times. Its sleek, integrated design looks just like a muscular bike - no one would guess it's electric, not even up close.

With a Flip Chip system that allows you to adjust the frame’s geometry quick and easy. Modify the head tube and rear triangle angles to suit your riding style or terrain type. One frame, four possible configurations. Maximum versatility for riders who want it all.

Responsiveness

Immediate and precise response to every movement.

Design Integration

Clean, modern design with advanced integration and standout aesthetics.

Lightness

The Reason is lighter without compromising performance, improving agility and efficiency on demanding terrain.

Technical Information

Frame	Reason Full Carbon Frame, Alloy shock extension, Full Integratted Battery, 12 x 148 Boost, Megamo ASP, Wheel travel: 160 mm
Motor	Avinox M1 Drive Unit: 1000 Watt peak Power, 120Nm Peak Torque
UI/Remote	Avinox Screen: 2-inch OLED Control Display, Avinox Wireless Controllers: Right and left sides
Connectivity	Bluetooth Smart phone App, 4G SIM enabled functions (Data Sim required)
Battery	Avinox Integrated Battery: 800Wh
Charger	Avinox Charger: 12A/508W (0-80% in 1.5Hrs)
Fork	2026 Fox 36 Performance 160mm, Grip, 3 Positions, Rake: 44mm
Rear Shock	2026 Fox Float X Performance, 210x55mm, 2 Position
Headset	Acros AZX-589 ZS56 blocklock 150º
Stem	Satori New Ursa 35mm
Grips	Megamo Lock-On Grips
Handlebars	Megamo Alloy Butted 35x800 mm, 12mm Rise, 6º Back Sweep
Saddle	Fizik Terra Aidon X5
Seatpost	Megamo Dropper seat post, remote adjustment, 31,6mm, size Sml - 125mm/ size Med -150mm/ size Lrg - 170mm
Brakes	Shimano XT BR-M8220, hydraulic disc 4-Piston, Shimano RT-EM810 Rotors 203/203mm
Rear Derailleur	Sram Eagle 90 T-Type 12 Speed
Shift Levers	Sram Eagle 90 Transmision Trigger, 12 Speed
Cassette	Sram XS-1270 Eagle 10-52T HG Fitting
Chain	Sram Eagle 90 T-Type
Crankset	FSA CK-752 Alloy, 165mm
Chainrings	E-MTB Chainring 104BCD 34T (Min 32T/ Max 36T compatible)
Wheels	Megamo SL30, Tubeless ready Aluminium rim
Front Tire	Maxxis Assegai MaxxTerra 292.5"WT Dual Compound EXO TLR - we can discuss tyre upgrades to your choice.
Rear Tire	Maxxis DHR II MaxxTerra 29x2.4"WT Dual Compound EXO TLR - we can discuss tyre upgrades to your choice.
Inner Tubes	Standard, Presta Valve - We can provide tubeless set-up and tyres liners in addition.

Sizing Information

	Small	Medium	Large
Flip Chip Position	Low/ High	Low/ High	Low/ High
Reach	444/442mm	472/470mm	502/500mm
Stack Height	615/617mm	633/635mm	651/653mm
Standover Height	780mm	785mm	790mm
Wheelbase	1232/1233mm	1273/1274mm	1316/1317mm
Chainstay Length	449/450mm	453/454mm	457/458mm
Bottom Bracket Drop	27/30mm	27/30mm	27/30mm
Bottom Bracket Height	351/348mm	351/348mm	351/348mm
Effective Top Tube Length	583/584mm	616/617mm	650/651mm
Head Tube Angle	63.7/63.5°	63.7/63.5°	63.7/63.5°
Head Tube Length	100mm	120mm	140mm
Effective Seat Tube Angle	77.2/77°	77.2/77°	77.2/77°
Seat Tube Height	400mm	420mm	455mm

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Megamo Reason CRB 05 Carbon Avinox E.Mountain Bike - Orange

Megamo Reason CRB 05 Carbon Avinox E.Mountain Bike - Orange

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