Reference CYL70.4S-WP
CYL70.4S-WP
Category: Cylindricals
Product Specifications
- Internal Diameter: 70 mm
- Bottom Base Diameter: 140 mm
- Top Base Diameter: 140 mm
- Length: 75 mm
- Flange: N.A.
- Flange Offset: centered
- Total Length: N.A.
- Top Style: rubber
Details
P037 - High Protection. Versatile Performance.
Sprint Filter P037 is an advanced waterproof air filter developed for demanding conditions involving dust, dirt and water exposure.
Designed for applications such as Dual Sport riding and challenging road environments, P037 combines fine filtration with high airflow, providing effective engine protection without sacrificing performance.
Its characteristics make it a versatile solution for users who require additional protection in difficult operating conditions.
Filtration & Performance
P037 features a specialized filtering media with a filtration rating of 37 microns, while delivering airflow comparable to Sprint Filter's P08 performance filter.
This balance between permeability and filtration efficiency helps protect the engine from smaller airborne particles while maintaining effective intake airflow.
P037 has also been used in demanding motorsport environments, including the Bonneville Salt Flats and the Bahrain Superbike Championship, where exposure to dust and challenging conditions requires reliable filtration.
Easy Maintenance
P037 requires minimal maintenance. Simply remove the filter from the airbox, clean it using compressed air and reinstall it.
No oiling, washing or special cleaning products are required under normal conditions, making maintenance quick and straightforward.
Durability & Build Quality
Manufactured from durable synthetic polyester, P037 is designed to maintain its structure and filtering performance over time when properly maintained.
Combining Sprint Filter's experience in motorsport and filtration engineering, P037 offers long-lasting reliability, effective engine protection and consistent airflow in demanding environments.

Fabrics of filters
The common performances air filters are composed of cotton yarn very large, the Sprint Filter polyester air filters instead consist of much smaller yarns and calibrated. Thanks to this type of construction the Sprint Filter polyester fabric allows a better filtration combined with a good air permeability, as shown by tests performed. It is necessary say that as regards the cotton fabric results obtained were not constant, this is due to the weak structure and mobile of cotton gauze, the following data are, however, best obtained. With respect to the polyester fabric data have remained constant and precise.
Premium cotton 4 layers air filter - microscope view 10x
Premium cotton 4 layers air filter - microscope view 10x
Sprint Filter P037 air filter microscope view 10x
Sprint Filter P08 air filter microscope view 10x

Air permeability
The uniform and compact polyester filtering element consists of a thin filament of fabric, forming a mesh of several dozen microns, capable of trapping all significant particles and ensuring a very high air flow rate. Our polyester air filter guarantees a very high air flow that neither cotton filters nor OEM paper filters can achieve. Remember this simple equation: More Air = More Power!

Efficiency filtration
The Sprint Filter polyester air filters retain 93.13% of 100 μ particles (Sprint Filter P08 air filter) - 91.8% of 37 μ particles (Sprint Filter P037 air filter) - 95.22% of 100 μ particles (Sprint Filter P08F1-85 air filter) versus the 76.42% of a common 4-layer oil-soaked cotton air filter
Because of its uniform structure, the Sprint Filter air filter ensures less air flow disturbance, also thanks to the exclusive and patented filtering material in single-layer polyester.

The realization
Sprint Filter creates over 65 years innovative products made with the most sophisticated and technologically advanced materials: from aluminum, steel, and then move on to materials in polyurethane foams to get to plastics all kinds of fine carbon and kevlar. The entire process of manufacturing our products is done internally with sophisticated equipment design and production: designed with advanced three-dimensional cad-cam our filters and extraction systems are built using molds developed with numerical control machines and realization fine with modern machinery for molding plastics and dispensing of polyurethane.
Technical Specifications
| Technology | Multilayered Oiled Cotton / Foam | P08 | T12 | P037 | P08F1-85 | P14 |
|---|---|---|---|---|---|---|
| Mesh Opening | Random | 80 μm | 7 μm | 37 μm | 85 μm | 14 μm |
| Airflow | Random < 2500 l/m²/s | 5,000 l/m²/s | 560 l/m²/s | 4,500 l/m²/s | 15,000 l/m²/s | 1,800 l/m²/s |
| Laminar Flow | No | Yes | No | Yes | Yes | Yes |
| Max Performance Longevity | Short | Consistent | Consistent | Consistent | Consistent | Medium |
| Peak Performance Repetition | Random | Consistent / Always the same | Consistent / Always the same | Consistent / Always the same | Consistent / Always the same | Random |
| Maintenance Procedures |
1) Washing with detergent; 2) Allow to dry; 3) Oiling |
Blow with compressed air | Blow with compressed air | Blow with compressed air | Blow with compressed air | Blow with compressed air |
| Extra Maintenance Kit | Yes (required) | No | No | No | No | No |
| Water Repellent | No | No | Yes | Yes | Yes | Yes |
| Type of Use | Road / Racing | Road / Racing | Desert / extreme conditions | Road / Racing + demanding conditions | Road / Racing | Road / Racing |




