Sprint Filter CM274S P08 Air Filter for Royal Enfield Himalayan 450 & Guerrilla 450

Sprint Filter CM274S P08 Air Filter for Royal Enfield Himalayan 450 / Guerrilla 450

The 452cc Sherpa single runs in both the Himalayan and the Guerrilla. The Sprint Filter CM274S is the maximum-airflow grade for road-biased riding on either. It drops straight into the factory airbox and replaces the paper element for good.

A dry filter, not an oiled one

Almost every performance air filter sold in India is oiled cotton gauze. It works, but it comes with a routine: strip it, wash it, dry it completely, re-oil it evenly, and hope you did not over-oil it.

Sprint Filter's P08 media is different. It is a dry filter: to service it you take it out, blow it through with compressed air, and put it back. No cleaning solvents, no oil, no drying time, and no risk of oil residue migrating downstream into the intake tract of a fuel-injected engine.

The numbers Sprint publishes

Sprint Filter is unusually specific about its media, which makes it possible to compare grades honestly rather than by adjective:

• Filtration: traps debris down to 80 microns
• Airflow: 5,050 litres per square metre per second
• Media: single-layer polyester tissue, 70 micron wire diameter
• Servicing: dry, compressed air only

Which Sprint grade is right for you

Sprint make three media grades, and the trade-off between airflow and filtration is real. More airflow means a coarser weave:

• P08 (this filter) — 80 micron, 5,050 l/m²/sec. Road and track use on sealed surfaces.
• P14 — 14 micron, 1,800 l/m²/sec. Finer filtration for genuinely dusty routes and high-mileage daily use.
• T12 — 7 micron, 560 l/m²/sec. Off-road, gravel and desert conditions.

If your Himalayan spends real time on gravel and trail, look at the CM274T12 in T12 instead. It filters down to 7 microns at the cost of airflow, which is the right trade for genuine off-road use.

Built to outlast the service schedule

Polyester is a manmade fibre and, looked after properly, shows no meaningful loss of structure or filtering performance over time. Where a paper element is a consumable you buy again at every service, the CM274S is a component you fit once and clean periodically. Over the life of the motorcycle that changes the arithmetic considerably.

The element is manufactured in Italy by Sprint Filter, who supply filters into World Superbike and Grand Prix paddocks. This is the same media technology, in a road-legal replacement size.

Fitment guidance

Sprint catalogue the CM274S for:

• Royal Enfield Himalayan 450 (2024 onwards)
• Royal Enfield Guerrilla 450 (2024 onwards)

It is a drop-in replacement for the factory element and requires no modification to the airbox, no trimming and no additional hardware. If you are unsure whether this is the correct part for your bike or your model year, send us your registration details and we will help you check before you order.

Technical specifications

Brand: Sprint Filter
Part number: CM274S
Media grade: P08
Material: single-layer polyester tissue, 70 micron wire diameter
Filtration: down to 80 microns
Airflow: 5,050 l/m²/sec
Servicing: dry, clean with compressed air, no oiling
Country of manufacture: Italy