ALU Angled Motorcycle Pull-Through Valve 8.3 mm - 6-17-BL25MS8.3
- Motorcycle Pull-Through Valve 8.3 mm
Aluminium Chrome Valve BL25MS 8.3mm Tubeless, Screw-In
For motorcycles, scooters and mopeds | Bent at 97° | Core 17-490C and metal cap included | Sold per piece
The BL25MS 8.3mm is an aluminium, chrome-finished screw-in valve for tubeless tyres, made for motorcycles, scooters and mopeds. It's the narrower mounting-hole variant in the BL25MS family — same 97° bend, but a smaller mounting diameter than the 11.3 mm version, and fitted with a metal cap instead of a plastic one.
What this valve is for
On motorcycles and scooters, valve clearance is often limited by suspension components, the brake disc, or covers, so the bent shape of the BL25MS makes routine tyre inflation noticeably easier, without wrestling to connect the gun. The valve is made from high-quality aluminium with a chrome finish, which gives it durability and an airtight seal, plus a tidy look on the wheel. The narrower 8.3 mm mounting hole means this model suits rims with a different hole diameter than the 11.3 mm version.
Design and construction
Durability, airtightness and a clean look.
Comfortable access and inflation.
For tubeless motorcycle and scooter tyres.
Comes with a metal cap.
Dimensions and technical data
| Parameter | Value |
|---|---|
| Product code | 6-17-BL25MS8.3 |
| Designation | BL25MS 8.3 |
| Material | Aluminium, chrome-finished |
| Tyre type | Tubeless |
| Installation method | Screw-in |
| Rim hole | 8.3 mm |
| Length | 22 mm |
| Overall height | 25 mm |
| Bend angle | 97° |
| Core included | 17-490C (spring-loaded) |
| Cap | Metal, included |
| Sold as | 1 piece |
Applications
- Tubeless wheels on motorcycles, scooters and mopeds with a narrower mounting hole
- Valve replacement when fitting a new or used tyre
- Upgrading a wheel with a tidy, chrome part instead of a standard rubber valve
- Motorcycles and scooters where suspension components restrict access to a straight valve
- Motorcycle and scooter service shops
Frequently asked questions
How does this valve differ from the BL25MS 11.3mm (17-BL25MS11.3)?
The main difference is the mounting hole diameter — 8.3 mm instead of 11.3 mm — and the cap, which is metal on this version instead of plastic. The 97° bend angle and the 17-490C core stay the same across both variants.
What's the 97° bend for?
It makes the valve easier to reach and connect an inflation gun to on motorcycle and scooter wheels, where space is often limited by suspension parts, the brake disc, or covers.
What core comes with it?
A spring-loaded 17-490C core together with a metal cap, so the valve is ready to install right after purchase.
How do I check if this valve fits my rim?
Measure the mounting hole diameter in your rim and compare it against the stated 8.3 mm. If in doubt, it's best to compare the valve against the original part removed from the wheel.