AIRFILTER YCF Start 125

AIRFILTER YCF Start 125 by TWIN AIR — a clamp-on, round, dual-layer foam air filter designed to wake up your engine without complicating maintenance. Built for riders who want more torque, crisper throttle response, and a characterful intake note, this filter is all about feel and reliability. It’s not about the most expensive setup; it’s about the right piece that makes sense, improves breathing, and can be serviced easily.

Key features
- Units: Each
- Product Name: Air Filter
- Features: Washable
- Style: Clamp-On
- Filter Media Material: Foam
- Inside Diameter: 40.00 mm (1.562")
- Filter Shape: Round
- Filter Media Style: Dual-Layer

What it does for you
- Outer coarse open-pore foam traps larger dirt and grit, protecting the engine and airbox.
- Inner fine open-pore foam acts as a second filter, catching the smallest particles while preserving maximum air flow.
- The dual-layer design delivers a healthier balance between filtration and breathability, preserving power at the throttle.
- Sized smaller than some stock units, it makes service and filter changes quicker, while offering more dead air space around the filter for improved performance.

Technical details
- Type: Clamp-On air filter
- Material: Foam, dual-layer construction
- Shape: Round, with a 40 mm internal diameter for compatibility with common 40 mm airbox openings
- Washable: Yes, designed for repeat cleaning and reuse
- Application style: Universal clamp-on performance upgrade for motorcycles

Installation and maintenance tips
- Remove the seat and fuel tank if needed to access the airbox, disconnect any clamps, and lift the filter straight out.
- Clean by rinsing with mild soap and water; squeeze out excess moisture gently and allow to air dry completely before reinstallation.
- Inspect the seal and mating surfaces for cracks or damage; reinstall with even clamping force to ensure a true seal.
- Refit the filter with the airbox lid and any clamps tightened to factory best-practice guidance; avoid overtightening to prevent distortions.

Compatibilities
- Designed for universal clamp-on installations with a 40 mm inlet. Check your bike’s airbox opening and OEM references to confirm fitment.
- Suitable for a broad range of road-going motorcycles, roadsters and sportbikes where a clamp-on foam filter is appropriate.

Why choose AEB Development?
Every part is tested, validated and chosen for durability. AEB Development, it’s mechanics by enthusiasts, for enthusiasts. If you’re chasing real-world gains in braking feel, air intake efficiency, and reliable performance, this filter helps you feel the difference in the saddle.

Keywords: motorcycle parts, braking kit, disc, pads, chain kit, aviation hose, universal parts, compatible parts, motorcycle maintenance, motorcycle performance, plug & play mounting, AEB Development. For road-specific builds, the YCF Start 125 filter delivers direct, tangible gains in torque and throttle response, without gimmicks. Every piece is tested, validated and chosen for durability. AEB Development, mechanics by enthusiasts, for enthusiasts.