Triumph Rocket X 2015: Specs, Facts & Known Issues

The Machine's Character

The Rocket X is an anniversary edition of the Rocket III. Only 500 numbered units were built worldwide, and it looks the part. It has Jet Black bodywork with 'grind' effect silver stripes, blacked-out components and a numbered billet aluminum badge, so it manages to look menacing and elegant at the same time. Underneath is the reason anyone buys a Rocket: a 2294 cc liquid-cooled inline-three making 146 hp and 163 lb-ft at just 2,750 rpm, driving a 5-speed gearbox and a shaft. Most cruisers are built around twins, and a triple this big makes this bike an outlier. It has a cruiser's stance and a muscle bike's engine.

On the road it pulls with a relentless, easy shove, and it changes direction more willingly than its 809 lb (367 kg) wet weight would have you expect. That makes it a bike for an experienced rider who wants presence and torque more than finesse. The caveats are plain. The upside-down fork has no adjustment at all, and ABS is the only electronic rider aid. The ignition switch can fail intermittently, so check the key action carefully on any used example. If the bike has been parked for months, expect the fork seals to weep a little until it has been ridden again.

Hard Numbers

Spec sheets don't ride bikes, but they set the baseline.

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Key specifications
Power	146 hp (109 kW)
Torque	163 lb-ft (221 Nm) @ 2,750 rpm
Displacement	2294 cc
Engine	Inline-three
Cooling	Liquid-cooled
Gearbox	5-speed
Final drive	Shaft
Fork	Upside-down (USD)
Front tire	150/80-17
Rear tire	240/50-16
Wheelbase	66.7 in (1695 mm)
Seat height	29.5 in (750 mm)
Wet weight	809 lb (367 kg)
Fuel capacity	6.3 gal (24 L)
Fuel economy	30 mpg (US)

Equipment check

Chassis

Rear Suspension Adjustable Standard

Safety

ABS Standard

The Truth on the Street

Over the years I've collected a lot of owner talk about the Rocket X. Some of it came from paddock conversations and club nights, some from long chats with owners, and a lot from the emails and messages riders send me after a season or two on theirs. The picture is fairly consistent. Owners are proud of how rare the bike is and happy with what the engine does. Their complaints center on the rear suspension and the effort the bike asks for when it is barely moving.

Collector's pride and endless pull

What owners mention most is how special the bike feels to own. The limited-run finish and the individually numbered badge make it a collectible, and owners talk about that with real pride. The engine comes a close second. Riders keep describing the torque as effortless and immense, so overtaking takes almost no effort. They also say it keeps accelerating hard from whatever speed they happen to be doing.

Braver in the bends than expected

A smaller group of owners praises the posture. The mid-mounted pegs, wide bar and low seat leave them relaxed on an easy cruise and still in control when the pace picks up. Owners also say the ABS brakes give them confidence when slowing the heavy bike from speed, and that the chassis feels balanced enough to push through a string of corners. Opinions split on ground clearance. Some owners call it decent for a cruiser, while one rider who pushes harder says the peg feelers touch down early.

Firm rear, hard work slowly

The two gripes that come up most are the rear suspension and slow-speed handling. Owners say the twin shocks send bumps straight through, even after adjusting the preload. On rough roads and long days that firm ride can become punishing. Tight U-turns and slow maneuvers call for careful clutch and throttle control. A few single complaints complete the list: a 5-speed that engages with a loud clunk, a clutch lever that takes real effort, and more fuel stops than one owner would like.

Known issues

Ignition switch may fail intermittently

electrics occasional

The ignition barrel can develop a fault where the engine cuts out when the key is turned or jiggled. Replacement of the switch assembly is often required.
Fork seals may weep if stored for long periods

suspension rare

When the bike sits unused for weeks or months, the fork seals can relax and allow a small amount of oil to seep. Usually rectified by riding the bike to re-seat the seals.

The Expert Benchmark

Where this Triumph Rocket X pulls ahead of — or falls behind — its rivals on the numbers, and the typical bike in its class on character.

What kind of bike this is — character vs. the class

Metal-and-Muscle Presence

Rumble & Character

Low-Speed Confidence Despite Mass

Relaxed Boulevard Ergonomics

Living-Machine Feel

Relaxed Torque Authority

This bike Class average

The shape of the Triumph Rocket X — numbers and character vs. the average Cruiser

Head-to-head: Triumph Rocket X vs. its rivals

Power

146 hp This bike 125 hp Suzuki Boulevard M109R 120 hp Harley-Davidson Night Rod Special VRSCDX 100 hp Indian Scout 100 hp Yamaha XV 1900 A

Torque

163 lb-ft This bike 118 lb-ft Suzuki Boulevard M109R 85 lb-ft Harley-Davidson Night Rod Special VRSCDX 72 lb-ft Indian Scout 123 lb-ft Yamaha XV 1900 A

Displacement

2294 cc This bike 1783 cc Suzuki Boulevard M109R 1247 cc Harley-Davidson Night Rod Special VRSCDX 1133 cc Indian Scout 1854 cc Yamaha XV 1900 A

Wet weight

809 lb This bike 765 lb Suzuki Boulevard M109R 676 lb Harley-Davidson Night Rod Special VRSCDX 558 lb Indian Scout 725 lb Yamaha XV 1900 A

Seat height

29.5 in This bike 27.8 in Suzuki Boulevard M109R 26.0 in Harley-Davidson Night Rod Special VRSCDX 26.5 in Indian Scout 27.8 in Yamaha XV 1900 A

The 'Should I Buy It?' Score

Forget spec-sheet bragging. Here's who the Rocket X is actually built for.

Aerial view of a winding asphalt road cutting through volcanic terrain on La Gomera, Canary Islands. The road curves through sparse green vegetation with rocky volcanic peaks visible in the background and a settled valley to the left. Clear lane markings, dry climate, partly cloudy sky.

Best cruiser for Sturgis?

If Sturgis or Daytona is about sound, presence and being seen, this numbered black triple will draw a crowd in any row. Just know it sounds nothing like a twin, and that's the point.

Made for A1A — Florida Atlantic Coast · Black Hills / Sturgis Rally Hub · Daytona Main Street / Bike Week

Best retro motorcycle for road trips?

For slow days through small towns and historic routes, the smooth triple and low 29.5 in (750 mm) seat suit a relaxed rhythm. It's more muscle than classic, so buy it for presence, not vintage looks.

Made for Acadia National Park · Austin / Handbuilt Motorcycle Show · Blue Ridge Parkway

Best touring motorcycle for long distance?

It cruises all day with calm stability, but with no cruise control, no factory luggage and about 180 miles per tank, big national park loops will take planning and extra fuel stops.

Made for Beartooth Highway · Blue Ridge Parkway · Going-to-the-Sun Road

Alternatives to the Triumph Rocket X

If this one isn't quite the fit, these are the bikes worth riding back-to-back against it.

Any price note compares both bikes at the same age — the youngest age both have on the used market — against this Triumph Rocket X. “cheaper/pricier” is what that bike costs second-hand, not how worn it is.