Honda Rebel CMX 500

From a press release issued by Honda:

Development of the Rebel began in North America, with an outlook geared toward firing the imagination of a younger generation of riders in a different way to traditional cruiser motorcycles. Powered by a 471cc parallel twin-cylinder engine, with strong bottom end torque and a smooth, linear power delivery, the Rebel is A2 licence friendly. For 25YM the engine has been updated with new ECU settings and OBD2-2 exhaust sensor.

The Rebel has been designed to be a slim motorcycle with a low seat height making it easy, and unintimidating to manage at low speeds. The riding position is relaxed and neutral, with gently outstretched arms matched to mid-mounted footpegs. Alongside visual paint upgrades, updates for 25YM focus on rider comfort: the seat material is new, whilst the handlebar position has been optimised, and the rear shock bump stop rubbers re-shaped. Also, the LCD display is now more visible in bright light.

The CMX500 Rebel’s tubular steel frame draws fresh, contemporary lines into stripped-back, fat-tyred ‘bobber’ style. Blacked out to the maximum, with the minimum of paint, it switches from solo-only to pillion-possible via two bolts.

The 25YM CMX500 Rebel will be available in the following colour options:
- - Mat Dim Gray Metallic
Mat Gunpowder Black Metallic

The 25YM CMX500 Rebel ‘S’ Edition will be available in the following colour option:
- Mat Gunpowder Black Metallic
- Candy Energy Orange

Key Features
Styling & Equipment
- Lean and low ‘bobber’ styling an exercise in minimalist design
- Negative LCD display with even stronger visibility in bright lightRider’s seat now more comfortable; pillion pad and rear pegs easily removed for customisation
- Factory-fitted Genuine Honda Accessories ‘S’ option remains available

Two key words ran throughout the Rebel’s development programme: ‘Simple’ and ‘Raw’. But to do so much with so little is an art form in itself, an exercise in minimalist design where every detail matters.
And the 25YM Rebel does not disappoint; rolling on fat tyres, a low and lean ‘bobber’ silhouette crowned by the signature steeply raked 11.2L fuel tank, and newly optimised for comfort fat handlebars. From every angle of its stripped back form, it expresses an off-beat individuality.

Everything that can be is blacked out, accentuating the Rebel’s lithe design as well as underlining the subtle paintwork. All lighting is LED, and the evocative round headlight features a compact 175mm diameter lens and die-cast aluminium mount. The ultra-thin oval tail-light and licence plate light match the Rebel’s low-down stance; mini circular LED indicators measure only 55mm in diameter, with a circular position light included in the front indicators.

The speedo is a compact 100mm dial with negative LCD display and white backlight – now more readable in bright light conditions – and is both striking and effective. Relaying key data, the unit features a gear position indicator and fuel consumption display. The ignition is housed below the left side of the fuel tank.

Rider comfort has been improved for the 25YM through the use of a new urethane foam material for the seat. Both pillion pad and rear footpegs are easily removed to help transition between pillion and single occupancy, as well as allowing a range of accessories from the comprehensive line-up to be fitted. Optional extras include a rear rack, backrest, tank pads, flyscreen, nylon or leather saddlebags and much more.

The ‘S’ edition continues for 25YM and comes complete with factory-fit headlight cowl with smoke screen, retro front fork covers and gaiters and a special brown diamond-stitch style seat and bronze wheels.

Engine
- 471cc liquid-cooled parallel twin-cylinder engine, A2 licence compatible
- Torque heavy bottom-end delivers an effortless ride
- 120mm ‘shotgun’ style exhaust provides a suitable cruiser soundtrack

The 471cc 8-valve, liquid-cooled parallel twin-cylinder engine is shared across Honda’s extensive range of A2 licence machines. For cruising duties, revised PGM-FI fuel injection mapping as well as bespoke valve and ignition timings mean its character has always been focussed on a torque-heavy bottom-end output, with smooth and linear delivery throughout the rev-range. Punchy maximum torque of 43.3Nm torque @ 6,000rpm combines with peak power of 34kW @ 8,500rpm.

It’s a power unit that strikes a great balance between physical size and flexible output. Bore and stroke is set at 67mm x 66.8mm respectively, with compression ratio set at 10.7:1. Internally the cylinder head uses roller rocker arms; shim-type valve adjustment allows them to be light, for lower valve-spring load and reduced friction.

A silent (SV Chain) cam chain has the surface of its pins treated with Vanadium, reducing friction with increased protection against dust. Inlet valve diameter is 26.0mm with exhaust valve diameter of 21.5mm.

Friction is reduced by the addition of striations on the piston skirt (a finish that increases surface area, introducing gaps in which oil can flow for better lubrication). An AB 1 salt bath process, used after isonite nitriding, forms a protective oxidisation membrane.

The crankshaft pins are phased at 180° and a primary couple-balancer sits behind the cylinders, close to the bike’s centre of gravity. The primary and balancer gears use scissor gears, reducing noise. The crank counterweight is specifically shaped for couple-balance and its light weight allows the engine to spin freely, with reduced inertia.

The crankcases use centrifugally cast thin-walled sleeves. Their internal design reduces the ‘pumping’ losses that can occur with a 180° phased firing order. A deep oil sump holds 3.2L. Slick to use up or down, the six-speed gearbox is designed to offer effortless changes, especially around town. An assist/slipper clutch makes the shift lighter and smoother, and controls rear wheel ‘hop’ on rapid downshifting.

The 2-1 exhaust scrubs spent gases in its catalyser, which then speeds them through its first chamber into the second resonator chamber; the sound produced has a heavy-duty pulsing feel that fits the torque delivery. Breathing through a 120mm diameter ‘shotgun’ style muffler a Linear Air Flow (LAF) sensor, revised ECU settings and new OBD2-2 exhaust sensor ensure EURO5+ compliance.

Chassis
- Low slung tubular steel frame with newly optimised handlebar position
- Compliant, supple damping front and rear; shocks nitrogen charged with revised bump stop rubbers
- 130/90-16 front and 150/80-16 rear tyres

Facilitating the Rebel’s low-slung look is an attractive tubular steel frame that grips the engine in three places. Designed to be as narrow as possible around the rider’s inseam, the frame includes an innovative rear loop that separates the thicker seat from the textured metal mudguard. At the rear, the bolt-on cast aluminium subframe provides further scope for customisation.

Trail is set at 110mm with 28° rake; the 30° off-set of the forks, combined with a 1490mm wheelbase allows for a low 690mm seat height. The Rebel’s footpeg placement ensures a natural, comfortable riding position, with balanced and neutral steering. The handlebar position has been finely tuned for 25YM to further rider comfort.

At 230mm apart, the 41mm front fork stanchions are set wide for handling rigidity, comfort and style; spring rates and oil volume are optimised to give compliant damping and a smooth ride. The tubular steel swingarm has a 45mm diameter and works twin, nitrogen-charged shock absorbers that feature 5 step preload settings and revised bump stop rubbers that have been re-profiled for a smoother ride.
Dunlop tyres are fitted as standard sized 130/90-16 front and 150/80-16 rear. The classical style of the 16-inch cast aluminium wheels is crisp and simple, with the 296mm front disc acting as mirror to the spoke pattern. A twin-piston front caliper is matched by a single-piston rear.

Accessories
As a motorcycle born to be accessorised, there is an extensive range of Genuine Honda Accessories are available individually or as part of specially curated packs that are ready to bolt straight on to the CMX500 Rebel.

The Style Pack (note: not compatible with Special version) is designed to highlight the custom appearance of the Rebel, by adding:
- Front Fork Boots & Covers
- Side Tank Pads
- Rider Seat (available in Brown or Black)
- Passenger Comfort Seat (available in Brown or Black)
- Headlight Cowl

The Comfort Pack is a versatile collection of parts designed to enhance both rider and pillion’s comfort and convenience:
- 12V Socket
- Passenger Backrest (available in Brown or Black)
- Heated Grips
- Rear Carrier

The Travel Pack is a collection of accessories which turn the Rebel into a long-distance tourer and travel companion:

- Right Saddle Bag & Support
- Left Saddle Bag & Support

The following accessories are also available:
- Solo Carrier
- Leather ‘throw-over’ Saddle Bags
- High Windscreen
- Meter Visor
- Center Tank Pad
- Adjustable Brake Lever
- Accessory Box