The facts.
| Brand | Sprint Filter |
|---|---|
| Part number | PM171S F1-85 |
| Filter code | P08F1-85 |
| Filter medium | Polyester (F1-85 specification) |
| Wire diameter | 22 microns |
| Particle filtration threshold | 85 microns |
| Waterproof | Yes — patented technology |
| Maintenance | Compressed air only; no oil or cleaning agents required |
| Fitment | BMW M1000RR K66 (2021-2026) |
DescriptionThe whole story▼
The Sprint Filter P08F1-85 PM171S brings genuine MotoGP and World SBK filtration technology to your BMW M1000RR K66, delivering nearly three times the airflow of the standard P08 filter with almost no ongoing maintenance cost. Whether you ride mainly on the road or occasionally push the M1000RR on track, this is a filter you fit once and largely forget — no oiling, no specialist cleaning kits, just a blast of compressed air when needed.
Which M 1000 RR this fits
PM171S F1-85 is the racing element Sprint Filter records for the M 1000 RR built from 2021 to 2024. From the 2025 model year the same motorcycle is listed against a separate reference, PM278S F1-85. The bike keeps its name across that split, so the year in the registration document is what decides. The same PM171S F1-85 also serves the S 1000 RR, S 1000 R, S 1000 XR and M 1000 XR, each on its own page with its own year window.
Key Features
- Triple airflow compared to the standard P08 filter, directly supporting increased power potential from the M1000RR K66's engine
- Polyester filtration medium with a wire diameter of just 22 microns, retaining 95.22 % of 100-micron particles in Sprint Filter's test (standard P08: 93.13 %) — the finest filtration of any high-flow filter in its class
- World's only waterproof filter of its type, protected by patented technology that keeps performance consistent even in heavy rain or humid conditions
- Near maintenance-free care: clean with compressed air alone — no washing, no re-oiling, no expensive cleaning products required
- Proven race pedigree: currently used by factory MotoGP, Moto3 and World SBK teams, backed by over 65 years of Sprint Filter manufacturing experience
- Dimensionally stable polyester construction retains its shape and filtration efficiency over years of use without degradation or structural loss
Designed for Real-World Riding and Track Days Alike
Most performance air filters demand a maintenance ritual — specialist oil, cleaning solvent and a drying cycle before the bike is rideable again. The P08F1-85 sidesteps all of that. The polyester F1-85 medium needs nothing more than compressed air to restore it to full performance, making it a genuinely practical upgrade for riders who use their M1000RR as a daily or weekend machine rather than a dedicated race bike. The cost saving over the ownership lifetime of the filter is substantial compared with both replaceable paper elements and traditional oiled cotton filters.
Race-Derived Filtration Technology
Sprint Filter's F1-85 medium uses a precision-woven polyester mesh with a 22-micron wire diameter, engineered to pass the maximum volume of air while still intercepting contaminants: 15,000 l/m²/sec of flow, with 95.22 % of 100-micron particles held back in the manufacturer's test. The result is the highest air permeability available in any production motorcycle filter, which is why factory race teams running the P08F1-85 spec choose it over every alternative. The patented waterproof construction is unique in the market: no other filter in this category offers the same level of all-conditions reliability, meaning the M1000RR's engine is protected regardless of the weather encountered on a road ride or a wet track session.
Fitment and Compatibility
The Sprint Filter PM171S P08F1-85 is a direct OEM replacement fitment for the following motorcycle:
- BMW M1000RR (K66) — model years 2021, 2022, 2023, 2024, 2025, 2026
No modifications or adaptors are required. The filter locates exactly as the original factory air filter and seals correctly within the airbox.
Specifications
- Brand: Sprint Filter
- Part number: PM171S F1-85
- Filter code: P08F1-85
- Filter medium: polyester (F1-85 spec)
- Wire diameter: 22 microns
- 100-micron particle retention: 95.22 % (manufacturer test)
- Airflow: approximately 3x the standard P08 filter
- Waterproof: yes — patented technology
- Maintenance: compressed air cleaning only (no oil or cleaning agents required)
- Fitment: BMW M1000RR K66 (2021-2026)
DownloadsOwner's manual · brochure▼
FitmentWhich bikes this fits▼
- BMW M 1000 RR (2021–2024)
- BMW M 1000 XR (2021–2026)
- BMW S 1000 R (2021–2026)
- BMW S 1000 RR (2019–2026)
- BMW S 1000 XR (2020–2026)
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