A heavily modified version of the Royal Enfield Himalayan 450 has been developed in the United Kingdom, demonstrating how the adventure bike can be adapted for more demanding off-road riding.
Built by UK-based workshop Cooperb Motorcycles, the project is called the Royal Enfield Himalayan 450 Phantom and introduces a range of aftermarket upgrades aimed at improving durability, suspension capability and long-distance usability.
The modified motorcycle retains the standard Himalayan 450 platform but adds several rally-inspired components designed for riders who intend to tackle challenging terrain.
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Engine Remains Largely Stock

The Royal Enfield Himalayan 450 Phantom build continues to use the Himalayan’s 452cc Sherpa single-cylinder engine, meaning the core powertrain remains unchanged. However, Cooperb has introduced a few supporting upgrades intended to improve engine breathing and response.
These include an HP Corse exhaust system and a DNA intake kit, both of which aim to enhance airflow. In addition, a FuelX Pro Plus controller allows riders to adjust the air-fuel mixture using preset modes without requiring complex tuning.
While these upgrades do not significantly alter the engine’s internal components, they are intended to improve throttle response and adaptability in different riding environments.
Suspension Upgrades Target Off-Road Performance
One of the most significant changes in the Royal Enfield Himalayan 450 Phantom build focuses on the suspension setup. Buyers can opt for upgraded rear shocks from Hagon or K-Tech, both of which offer adjustable preload and compression damping.
The K-Tech option adds rebound adjustment, allowing riders to fine-tune the suspension depending on terrain conditions or riding preferences.
Front suspension improvements are also available through an optional K-Tech ProValve kit. Although the original open-cartridge fork design remains unchanged, revised internal components aim to deliver improved damping performance and greater adjustability.
These changes are intended to provide better control and stability when riding on rough trails or uneven surfaces.
Larger Fuel Tank and Rally Ergonomics

Another key change is the addition of a 23-litre Acerbis fuel tank, replacing the standard 17-litre unit found on the production Himalayan 450. The larger tank allows riders to travel longer distances between refuelling stops, which can be particularly useful during extended off-road rides.
The build also features Royal Enfield’s Rally seat, which increases seat height by approximately 20 mm. The change is designed to improve rider positioning when standing on the footpegs during off-road riding.
Wheel and Tyre Options
Cooperb offers several wheel options as part of the Phantom upgrade package.
Entry-level builds retain the Himalayan’s standard tubeless spoked wheels, while riders seeking greater durability can opt for SM Pro lightweight rims. An optional 18-inch rear wheel is also available, making it easier to mount more aggressive off-road tyres designed for loose terrain.
These modifications allow riders to tailor the motorcycle depending on their intended riding style.
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Competition Experience and Pricing

The modified Himalayan 450 has already been tested in competitive conditions. One of the Phantom builds participated in the Valleys X-Treme Lite off-road race in Wales, where it secured first place in the Big Bike Single category.
The conversion package for the Phantom build starts at approximately £10,299 (around Rs 12.73 lakh). Fully equipped builds with additional upgrades can reach close to £12,000 (around Rs 14.84 lakh) depending on the specification.
Royal Enfield Himalayan 450 Phantom Upgrade Package Pricing
| Build Type | Approx Price (UK) | Approx Price (India Equivalent) |
|---|---|---|
| Base Phantom Conversion | £10,299 | Rs 12.73 lakh |
| Fully Equipped Build | ~£12,000 | Rs 14.84 lakh |
What This Means for Riders
The Royal Enfield Himalayan 450 Phantom build highlights the potential of the Himalayan 450 platform as a base for serious off-road modifications. For enthusiasts interested in rally-style adventure riding, the upgrades demonstrate how aftermarket components can significantly enhance the motorcycle’s capability.
While the Phantom itself is a specialised build created in the UK, it illustrates how the Himalayan 450 can be adapted for more demanding off-road environments beyond standard factory specifications.
Conclusion
The Royal Enfield Himalayan 450 Phantom project by Cooperb Motorcycles showcases a more extreme interpretation of the Royal Enfield Himalayan 450.
By combining suspension upgrades, rally-inspired ergonomics and extended fuel capacity, the build highlights the versatility of Royal Enfield’s latest adventure platform and its potential for hardcore off-road use.
Note: The Royal Enfield Himalayan 450 Phantom build is an aftermarket modification created by Cooperb Motorcycles and is not an official Royal Enfield product. Specifications, pricing and availability may vary depending on selected components and regional regulations.
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Raj Prajapati is a senior automobile content writer at How2Guidess.in with over 3 years of experience in auto news, vehicle launches, comparisons, and EV updates. With a background in Computer Science & Engineering, he focuses on research-based, clear, and reader-friendly automobile content.