top of page
Yamaha Power Assist Bicycle Logo


The YDX-MORO is an all-mountain power assist bicycle. It utilizes Yamaha’s patent-pending Dual Twin™ frame, designed in perfect alignment with their powerful new PW-X2 drive unit, to offer riders a never-felt-before level of rider control and balance.

At center-stage is a Shimano SLX 11-speed drivetrain connected to Yamaha’s compact, center-mounted PW-X2 motor. The PW-X2 offers five levels of Power Assist, and for the first time, an AUTOMATIC and a push assist mode.  The PW-X2 offers an increased max cadence support of 170rpm, and a max speed support of 20mph, to assist you through every situation with a smooth, natural feeling ride. The drive is integrated into Yamaha’s Dual Twin™ frame and RockShox Revelation RC Boost 160mm front fork. Additionally, all cables are routed through the frame for better protection from the elements, this includes the routing for the integrated dropper post. The battery is protected by the bottom cage of the Dual Twin™ frame, further protected by a subframe battery jacket. When fine-tuning the different sizes offered, the unique stack and reach dimensions were created to maintain the advantages of low center of gravity and an always-active suspension of the YDX-MORO through the lineup. Stopping is handled by a powerful, reliable Magura MT30 hydraulic disc brake system both front and rear.

The Quad Sensor System, with integrated speed sensor as part of the rear hub assembly, is another industry leading innovation found on the YDX-MORO. This system is constantly taking readings of pedaling power, the bike’s rolling speed, rpms of the pedals, and bike angle to better anticipate in realtime the adjustments needed to Power Assist levels to ensure a seamless, natural feeling ride through the duration of your trip. With the Quad Sensor System, the YDX-MORO offers an Auto support mode, which cycles between ECO, STD, and HIGH modes. All this is handled behind the scenes, so you can pay attention to the trail ahead.

The tough, ergonomic interface of the Multi-Function Meter displays all the stats you need, such as speeds, battery life, and time, and has an integrated multi-color LED indicator to allow you to see what Power Assist level you are engaged in at a glance. The computer is controlled with a conveniently placed ergonomic control switch that can be easily operated with riding gloves.

The YDX-MORO is one of the lightest bikes in its category, only 53.3lbs, and does not make any compromises in quality or features to get there.

MSRP : $4,799

Color :

Desert Yellow

Sizes :

Small / Medium / Large

Yamaha YDX-MORO in Desert Yellow.
Closeup of PW-X2 Drive Unit.
Closeup of speed sensor rear hub.
Closeup of integrated battery, with battery cover, and front fork.
Closeup of Dual Twin frame.


PW-X2 Drive Unit

Now with an angle sensor for use in the All-New Auto support mode, new helical driven gears for less noise, and brand new programming to support an increase cadence support (now up to 170rpm) and the added push assist feature.

Speed Sensor Rear Hub

Exclusive to Yamaha Power Assist Bicycles is a speed sensor engineered into the rear hub. The speed sensor recognizes the slightest change in bicycle speed and helps adjust motor input to deliver a smooth and natural power assist feel for the ultimate ride experience.

Dual Twin™ Frame

Combining hydroforming and forging techniques, the patent pending Dual Twin™ frame design provides precise handling and surrounds both rear shock and battery resulting in security, protection and a low center of gravity full suspension frame.

All-New Modes

The NEW MTB mode offers a direct feeling assist suited for pedaling through tight corners and riding technical lines while AUTO support mode automatically switches between ECO, STD, and HIGH to provide optimal assist according to ride conditions.

PW-X2 Control Switch

The sleek and newly designed PW-X2 control switch maintains the ergonomic and tactile feel found on other Yamaha bicycles while adding a push assist feature button.

160MM Fork Travel

Easily tuned for a custom, buttery smooth feel, the 160mm travel fork maintains a higher ride height for ultimate confidence when riding steep and rough terrain.

Battery Cover

Protected in the lower cage of the dual twin frame is the 500Wh battery protected by a subframe battery jacket.

27.5+ Wheelset

With internal rim width of 40mm, the Yamaha-designed 27.5+ alloy wheelset is built with Boost hub spacing for a more direct chainline in the rear wheel and wider hub flange for increase spoke strength to the rim.

Integrated Dropper Post

Push lever control allows you to adjust your saddle height from your handlebar. A quick push of the lever allows you to lower your center of gravity so you can descend, corner, and jump more easily.

Person riding yellow YDX-MORO mid-air after small jump of mountain trial.
Yellow YDX-MORO propped up in a forest setting.
Person riding a Yellow YDX-MORO downhill through some short brush.
Person riding a yellow YDX-MORO down a steep decline on a mountain trail.


Suggested Use : All-Mountain


Frame : Yamaha Dual Twin Frame. Tapered headtube

Fork : RockShox Revelation RC Boost 160mm. Tapered aluminum steerer, 1 1/8in - 1 1/2in

Battery : Yamaha 500Wh with Charge-life indicator and Self-diagnosis display. Multilocation with anti-vibration mounting plate

Motor : PW-X2. Protective motor cover included

Crankarm : FSA ISIS. 170mm

Chainring :  Praxxis Wave 36T 104 BCD

Shifters : Shimano SLX 11-speed

Rear Derailleur : Shimano SLX Long-Cage

Brakes/Rotors : Magura MT30 Front: 4-piston Rear: 2-piston
203mm Storm CL Rotors

Cassette : Shimano SLX. 11-speed. 11/46T

Chain : KMC e11 Turbo

Hubs Front : 115X110 Boost

Hubs Rear : 12 x 148 Hyperglide freehub and Yamaha Bicycles Speed Sensor

Rims : Yamaha 27.5+ Alloy. Tubeless tape installed

Rim Width : 46mm (OUTSIDE) 40mm (INSIDE)

Spokes : Spokes SUS304

Spoke Nipples : Brass

Tires/Tubes : Rear: CST Patrol 27.5 x 2.8in Front: CST BFT 27.7 x 2.8in. Tubeless compatible rim. Tubleless compatible rim strip

Headset : Integrated tapered headset with 30mm headset spacers

Stem : Yamaha Alloy 4-bolt faceplate. 35.0 diameter. 40mm length

Handlebar : Alloy 30mm riser bar. 35.0mm diameter. 780mm width

Grips/Tape : Locking Dual Core

Seatpost/Saddle Clamp : Alloy 30.9mm dropper post (S/M) 125mm travel, (L) 150mm travel

Seatpost Collar : Single-bolt 35.0mm

Saddle : Yamaha Anti-slip finish with hand rail tail


Quad Sensor System
Rear hub speed sensor
Ergonomic control switch

Multilocation with anti-vibration mounting plate

Rated power: 250W (Nominal), 500W (Max)
Max torque support: 80 Nm
Max cadence support: 170 rpm
Max speed support: 20 mph
Internal cable/housing routing
Tapered headtube

3-Year on Frame, Motor, Battery*
Component Manufacturer's warranty is supported by Yamaha


*full details on warranty sheet

YDX-MORO starting place sizing chart. Small: 5ft to 5ft 7in. Medium: 5ft 4in to 5ft 11in. Large: 5ft 8in to 6ft 3in.
YDX-MORO Geometry

Frame Geometry

(A) Top Tube :
(B) Reach Length :
(C) Stack Height :
(D) Stand Over Height :
(E) Head Tube Length :
(F) Head Tube Angle :
(G) Seat Tube Angle :
Seat Tube Length :
Bottom Bracket Drop :
Wheelbase :
Rear Center :





































Have more questions? Let us know!

Want to know more about the YDX-MORO? Hear from first hand experience what they excel at or how we can help you find your ideal fit? Reach out and we'll be happy to help you get on the road or trail with a new bike!


You can call the shop during normal business hours at: 727-545-4554, or press the Contact Us button to leave us a message through our contact form. There you will also find our address and business hours, if you would rather to stop by the shop and see everything in person.

bottom of page