2015 Triumph Rocket III Roadster
The Triumph Rocket III initially began as a project back in 1998. At that time, Triumph was trying to find a way to break into the American big cruiser market that was dominated by Harley-Davidson. After years of development, the Rocket III was launched in 2004, signifying a move by Triumph to become a major player in a segment that featured big bikes with big engines.
Well, it doesn’t get any bigger than the Rocket III, thanks in large part to having a 2.3-liter, three-cylinder engine lying inside of it. In case you didn’t know, that’s the biggest engine of any production motorcycle in the business today.
Despite initially struggling to find its own niche, the Rocket III eventually settled in as a street fighter with the Rocket III Roadster eventually becoming the most powerful bike in the entire lineup.
For what it’s worth, the Rocket III will continue to hold this title until a bigger bike comes into the scene. That’s a future that likely won’t arrive anytime soon.
Click past the jump to read more about the Triumph Rocket III Roadster.
2015 Triumph Rocket III Roadster
Engine:Liquid-cooled, DOHC, in-line 3-cylinder
Horsepower @ RPM:148
Torque @ RPM:163
Energy:Multipoint sequential electronic fuel injection
There are a lot of superlatives you can throw in the direction of the Triumph Rocket III without having to go overboard with all the hyperbole. That said, you only need to look at this beefy ride to understand that this bike is for men who can handle. No boys allowed here! Everything about the Rocket III design can be described as “oversized.”
That includes the chrome-finished front engine dresser bars that matches really well with the highway pegs to ensure a comfortable seating position for the rider. Oh, and that plush leather seat? Really comfortable, too! I especially like way it curves up at the end to give some kind of comfort to the lower back. A lot of bikes have this, but not to the level of comfort that the Rocket III has.
Notice also how the Rocket III has twin headlamps that sit side-by-side from each other? That’s a trademark of the Rocket III. Same with the prevalent amount of chrome details throughout the bike that’s offset by blackened components, specifically the radiator cowls, the rear mudguard rails, the airbox cover, fork protectors, and mirrors. All these details were carefully added to give the Rocket III a menacing appearance, not that it needed to because it’s already pretty intimidating to look at on its own.
|Width handlebars||970 mm|
|Height without mirror||1165 mm|
|Seat height||750 mm|
|Wet weight||367 kg|
|Dry weight||334 kg|
Befitting of a bike that features the biggest engine in the motorcycle world, Triumph made sure that the Rocket III had the frame that was up to task. The company did just that by using a ￼big, tubular steel twin spine frame that’s strong and rigid enough to handle that massive engine. Remember, 2.3 liters may be small in the world of cars, but it’s a mammoth motor in the motorcycle world. The twin spin spine frame is there to ensure that the engine can sit comfortably without compromising the bike’s performance characteristics.
Similarly, Triumph also gave the Rocket III’s front end with d sports-bike-style upside down forks measuring 1.7 inches in diameter. The suspension allows the Rocket III to have the sturdiness to handle the road force the bike will undoubtedly be subjected to.
A bike with the size of the Rocket III also needs a wheel-and-tire setup that can handle all of its quirks, for better or for worse. As such, Triumph fitted a 16-inch rear wheel to emphasize the bike’s size while also allowing it the agility and versatility to handle whatever road condition it finds itself in. The last piece of the puzzle are the brakes and in this instance, the Rocket III was given a pair of vice-like, four-piston callipers that grips the front and rear discs and backed up by the company’s own ABS system.
|Frame||Tubular steel, twin spine|
|Swingarm||Twin-sided, steel (houses drive shaft)|
|Front Wheels||Cast aluminium alloy 5 spoke, 17 x 3.5in|
|Rear Wheels||Cast aluminium alloy 5 spoke, 16 x 7.5in|
|Front Tyres||150/80 R17|
|Rear Tyres||240/50 R16|
|Front Suspension||Kayaba 43mm upside down forks, 120mm travel|
|Rear Suspension||Kayaba black spring twin shocks with 5 position adjustable preload, 105mm rear wheel travel|
|Brakes front||Twin 320mm floating discs, Nissin 4-piston fixed calipers, ABS|
|Brakes rear||Single 316mm disc, Brembo 2-piston floating caliper, ABS|
I’ve probably beaten this feature a lot by now, but it’s still worth repeating. The Triumph Rocket III Roadster has the biggest engine of any production motorcycle in the world. Try looking for another motorcycle that has a 2,294 cc liquid-cooled, three-cylinder engine and you’re likely going to have no luck doing so. The massive motor on the Rocket III certainly allows it to live up to its name, thanks in large part to output numbers that hit 148 horsepower at 5,750 rpm and 163 pound-feet of torque at 2,750 rpm.
It’s not the fastest bike in the world but that’s not the point. What you get is unbridled power that can still hit a standing quarter-mile in just 12.2 seconds to go with a top speed of 137 mph.
|Engine type||Liquid-cooled, DOHC, in-line 3-cylinder|
|Fuel system||Multipoint sequential electronic fuel injection with twin butterflies and progressive linkage on primary butterflies|
|Exhaust||Stainless steel 3 into 1 into 2, large volume catalysts in front of chrome-plated silencers|
|Max power ec||148BHP @ 5750|
|Max torque ec||221NM @ 2750|
|Color Options||Matt Phantom Black, Phantom Black|
The Triumph Rocket III is priced at $15,499. The company also provides customers with a two-year unlimited mileage warranty on Triumph and Genuine Accessories to go with a 12-month unlimited mileage warranty on replacement parts and 10,000-mile service intervals.
“The Rocket III Roadster is a totally unique kind of motorcycle with the most unmistakable presence on two wheels. A true one-off it defies convention and category. But one ride tells you that they are about surprising levels of agility and performance in a bike that can deliver an engaging ride every day. They just happen to do it with that pure classic cruiser style.” ----- Total Motorcycle
“2.3 litres. 221Nm of torque. Blacked out. Blinged up. Streetfighting cruiser. Hard. The Rocket III Roadster is not normal, it is very, very special. No other motorcycle on the planet comes close to delivering the tree-pulling levels of torque that comes as standard with the turbine-like triple. Twist and go. Sounds great, stops great. Standard ABS. Classic streetfighter looks.” ----- Autobase