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All-New Triumph Bonneville T40: What’s Different From Speed 400?

Two roadsters siblings, but with very different personalities

Triumph recently launched the Bonneville T40 in India. It is based on the same engine as the Triumph Speed 400 but gets a slightly different tune to suit its retro character. Both the bikes cater to different audiences, here’s a detailed look at what’s different:

Explore Differences in Detail
Triumph Bonneville T40₹ 2,54,999* Onwards
VS
Triumph Speed 400₹ 2,35,327* Onwards
View Detail Comparison

Engine 

 

Specifications 

Bonneville T40

Speed 400 

Engine 

350 cc

350 cc

Power 

29 PS at 7000 rpm

37 PS at 8500 rpm

Torque 

31.2 Nm at  5500 rpm

32 Nm at 7000 rpm 

The Bonneville T40 uses the same engine capacity as the Speed 400, but it has been tuned differently, with different internal components and gearing. The bike is expected to have a punchier low-end feel, especially in lower revs. 

Underpinnings 

 

Specifications

Bonneville T40

Speed 400 

Frame

Hybrid spine/perimeter, tubular steel

Hybrid spine/perimeter, tubular steel, bolt-on rear subframe

Swingarm

Twin-sided, steel

Twin-sided, cast aluminium alloy

Wheels

Spoked, aluminium rims

Cast aluminium alloys

Front Tyre

18-inch

17-inch

Rear Tyre

17-inch

17-inch

Front Suspension

Conventional fork, 130 mm wheel travel

Inverted fork with 130 mm wheel travel

Rear Suspension

Twin shocks

Monoshock, preload adjustable

Front Brakes

310 mm disc

300 mm disc

Rear Brakes

255 mm disc

230 mm disc

Console

4-inch circular TFT

Digital-analogue

The T40 gets an all-new chassis and a subframe, which gives it a flatter rear seat – expected to give comfortable seating for the pillion. The all-new Bonneville also gets spoked aluminium rims with tubed tyres, which elevate its classic look. It rolls on an 18-inch front and 17-inch rear wheels, whereas the Speed 400 rides on 17-inch wheels at both ends.

Suspension duties are taken care of by a conventional fork on the Bonneville T40 and an inverted unit on the Speed 400. The T40 gets twin preload-adjustable shocks at the rear, while the Speed 400 gets a preload-adjustable monoshock.

For braking, the Bonneville T40 gets a 310 mm front disc and a 255 mm rear disc. These are 10 mm and 25 mm larger, respectively, than the 300 mm front and 230 mm rear discs on the Speed 400.

Features 

 

Features

Bonneville T40

Speed 400

Instrument Cluster

4-inch TFT

Semi-digital

Connectivity

Bluetooth, call/SMS alerts, Google Maps mirroring

None 

Riding Modes

Road, Rain, Eco, 2 customisable modes 

None

ABS

Cornering ABS

Switchable ABS

Traction Control

Cornering traction control

Traction control

Cruise Control

Yes

None

Indicators

Self-cancelling

None

USB Port

USB Type-C

USB Type-C

Switchgear

Backlit

Standard

Ride-by-Wire

Yes 

Yes

The Bonneville T40 takes a more modern approach to its retro theme with a 4-inch TFT display. The all-new unit enables connectivity features such as Bluetooth connectivity, call/SMS alerts and Google Maps mirroring. It gets 5 riding modes: Road, Rain, Eco and two custom modes, which alters the power delivery according to the mode selected. 

Also, it is packed with features that include cornering ABS, cornering traction control, cruise control, self-cancelling indicators, a USB Type-C charging port, and backlit switchgear. Thus making it one of the most feature-packed motorcycles in Triumph’s 350 cc lineup.

The Speed 400 keeps things more straightforward. It gets a digi-analogue console and features such as ride-by-wire, traction control and switchable ABS, traction control and a USB Type-C charging port. It misses out on smartphone connectivity.

BikeDekho says 

The Bonneville T40 commands a premium of Rs 19,672 over the Speed 400, while the T40 Black costs Rs 44,672 more. The Bonneville T40 offers a more premium package and  extensive feature list, but this comes at a higher price tag. 

Both the motorcycles cater to different audiences. If you want a classic roadster with modern features, the Bonneville T40 is the more suitable choice. However, if you want a roadster with a more affordable price tag and a simpler feature set, the Speed 400 makes more sense.

User Reviews

Absolutely love the bike!

Looks and Performance. Checked out a few bikes like the Duke 250 and the V-Storm. But this was much more refined and the best-looking one in terms of class. Fell in love with this after the test drive and decided I have to get this one. Feels a bit expensive, but you will forget the price tag once you own it. It's been amazing, especially on the highways. It's like a rocket on the right roads. The bike handles well in the city. It gets a bit too hot for long rides, but overall no issues. Gives a mileage of 32-33 kmpl on highways and around 20-25kmpl in the city. Would absolutely recommend this bike. If you love riding regularly and want a bike that's good for daily commuting and for long rides, I highly recommend this bike. People who are generally 5 feet 8 inches and above would be more comfortable, although I have noticed people who are much shorter handle it quite well.Read More

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Basu Sivaraj is an economist by education and an automotive enthusiast at heart, a national racer with hands-on experience in demanding, competitive riding conditions. His journey spans from fixing bikes in a garage to competitive riding, endurance off-road events, and real-world testing.
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