New K&N Air Filter Now Available for the BMW F 450 GS

The new BMW F 450 GS has arrived, and K&N has already introduced a high-flow replacement air filter specifically for BMW's latest middleweight adventure bike.

The K&N BM-4527 Replacement Air Filter is now available from The Filter Shop, priced at £67.99. Designed as a direct replacement for the standard air filter, it gives F 450 GS owners the benefits of K&N's washable and reusable cotton gauze filtration technology without replacing the factory airbox.

Shop the K&N BM-4527 for £67.99

Meet the New BMW F 450 GS

The F 450 GS brings BMW's famous GS adventure-bike formula into a lighter and more accessible package.

At its heart is a newly developed 420cc water-cooled parallel-twin engine, producing 48 hp (35 kW) at 8,750 rpm and 43 Nm of torque at 6,750 rpm. The engine uses four valves per cylinder, twin overhead camshafts and electronic fuel injection with throttle-by-wire.

With a road-ready weight of just 178 kg, the F 450 GS has been designed to provide a balance between everyday road use and genuine adventure capability. There's 180 mm of suspension travel at both ends, a 19-inch front wheel and 17-inch rear, while its 48 hp output also puts it within the A2 licence power limit.

For riders looking to upgrade their new F 450 GS, improving the engine's filtration and airflow is an obvious place to start.

Introducing the K&N BM-4527 Air Filter

The K&N BM-4527 has been developed as an application-specific replacement air filter for the BMW F 450 GS.

Rather than fitting a complete aftermarket intake system, the K&N replacement filter retains the motorcycle's original airbox and replaces the factory filter element.

K&N designs its motorcycle filters to provide low restriction while maintaining engine protection. The BM-4527 uses multiple layers of woven cotton gauze and pleated filter media to provide a large filtration surface area.

The result is a simple upgrade for riders who want to improve the breathing potential of their F 450 GS while retaining the original intake arrangement.

Why Upgrade Your BMW F 450 GS Air Filter?

An engine is essentially an air pump: the air entering the engine needs to pass through a filter before being mixed with fuel and used during combustion.

The factory filter has to balance filtration, manufacturing cost, servicing requirements, noise regulations and numerous other considerations.

K&N approaches things differently. Its high-flow replacement filters are designed to reduce intake restriction while still providing effective filtration, with K&N stating that its motorcycle replacement filters are designed to provide increased horsepower and torque.

That doesn't mean you should expect a dramatic transformation in outright performance simply by installing a filter. Instead, the BM-4527 should be viewed as a high-quality, reusable replacement for the standard disposable filter, with improved airflow potential being one of its main advantages.

Washable and Reusable

One of the biggest differences between a K&N filter and a conventional paper air filter is that the K&N is designed to be washed, re-oiled and reused.

The BM-4527 arrives pre-oiled and ready to use, so there's no need to treat the filter before its initial installation. When servicing is eventually required, it can be cleaned and re-oiled rather than simply thrown away and replaced.

For a motorcycle like the F 450 GS, which could potentially see everything from everyday commuting to long-distance touring and adventure riding, that makes the reusable design particularly appealing.

Riders regularly travelling in dusty or dirty environments should, of course, inspect their air filter more frequently and service it according to its condition and K&N's instructions.

Designed Specifically for the F 450 GS

Fitment is just as important as filter media.

K&N uses an application-specific base seal and sealing bead on the BM-4527, allowing the filter to correctly interface with the intended airbox.

That means there's no universal filter, improvised adaptor or modification to the intake system involved. It's designed as a replacement filter for the specific application.

For F 450 GS owners who want to keep their bike looking and operating largely as BMW intended, this makes the BM-4527 an attractive first modification.

K&N BM-4527 Key Features

The new filter offers:

• Application-specific replacement air filter for the BMW F 450 GS
• Designed to provide increased airflow
• Multiple layers of woven cotton gauze filter media
• Pleated design providing a large filtration area
• Washable and reusable construction
• Pre-oiled and ready to install
• Designed to provide excellent engine protection
• Application-specific base seal and sealing bead
• K&N No-Hassle Lifetime Limited Warranty

Does the K&N BM-4527 Require a Remap?

For riders simply replacing their original air filter with the K&N BM-4527 while retaining the standard airbox and otherwise standard engine configuration, this isn't the same type of modification as fitting a radically different complete intake system.

The filter is designed as a direct replacement within the factory intake arrangement.

If you're combining an upgraded filter with more extensive engine, intake, exhaust or ECU modifications, however, it can be worth speaking to a motorcycle tuning specialist about the overall setup.

A Great First Upgrade for the BMW F 450 GS

The BMW F 450 GS is one of the most interesting additions to BMW Motorrad's adventure range, combining a new 420cc twin-cylinder engine with a lightweight chassis and genuine GS styling and capability.

For owners looking for their first upgrade, the K&N BM-4527 is a straightforward place to begin.

You retain the original airbox and factory-style installation while gaining K&N's high-flow cotton gauze filter construction and, importantly, a filter that can be serviced and reused rather than routinely discarded.

At £67.99, it's a relatively inexpensive way to upgrade a brand-new F 450 GS.

Buy the K&N BM-4527 BMW F 450 GS Air Filter

The K&N BM-4527 Replacement Air Filter for the BMW F 450 GS is available from The Filter Shop for £67.99.

The Filter Shop specialises in performance filtration, with more than 25 years of industry experience and UK-based technical support available if you're unsure which filter is suitable for your motorcycle.