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A Mystery Triumph 400cc Bike Spotted, Likely To Be A Street Scrambler

By:Aaradhya Singh
Updated On: May 9, 2025 23:13 IST
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A Mystery Triumph 400cc Bike Spotted, Likely To Be A Street Scrambler

KEY HIGHLIGHTS

  • This could likely be a single-cylinder Street Scrambler based on the Speed 400 platform. 
  • Not meant to be a hardcore off-roader, this Street Scrambler could slot in between the Speed 400 and the Scrambler 400. 
  • The 398cc, liquid-cooled, single-cylinder mill will likely carry on unchanged.

We have news that Triumph Motorcycles will expand its single-cylinder 400cc lineup, and we have proof of it in the pictures in this story. While a more off-road focused Scrambler 400 X and a cafe racer based on the 400 platform have been spotted before, this is the first time we have seen this completely different bike altogether.

Before we head into the details of this mystery Triumph, make sure to join the 91wheels WhatsApp Community to keep up with the latest news and automotive updates.

Also read: Ducati DesertX And Monster To Get The New 890cc V2 Engine, Global Debut In 2026

A Mystery Triumph 400cc Spotted; Details!

triumph

The round headlamp with the familiar Triumph motif has been retained, and the side panels appears to be angular, but these may also be purpose built for the test bike, and we can expect certain things to change. The fuel tank also appears to have a mildly different design, which is likely to fit with the ethos of the Street lineup of bikes in Triumph's Modern Classics lineup.

triumph

This mystery Triumph appears to get a suspension setup similar to what we have seen on the Speed 400, featuring 43mm USD forks and a pre-load adjustable monoshock. It also seems to get 17-inch wheels on both ends with twin-spoke alloy rims. Considering that this could be a Street Scrambler, this particular wheel size is interesting. This motorcycle could prove to be a bridging option, offering the ease and accessibility of the Speed 400 with the added chops of the Scrambler 400 X.

The 398cc, liquid-cooled, single-cylinder engine will be carried over, with the same 39.4bhp at 8000rpm and 37.5Nm of torque at 6500rpm, paired to a 6-speed gearbox with a slipper clutch. We can also expect it to come with a similar set of features, including dual-channel ABS, switchable traction control, ride-by-wire, a gear position indicator, a USB C-type port, and a semi-digital instrument cluster among other things.

Also read: TVS Confirms Norton Entry In India By End-2025!

Image Source: Motorrad & Reisen

Verdict

This mystery Triumph motorycle may still be a while away from making its debut, considering that the spoke-rimmed Scrambler 400 X and the Cafe Racer are yet to be shown as well. However, we can expect things to get moving sometime later this year, and this bike could slot between the Speed and the Scrambler. 

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