ST shengtuo 90° CNC Aluminum Motorcycle Valve Stems TV25AL – Black, 8.3mm Fit, Hard-Anodized Pair

ST shengtuo TV25AL are black 90° CNC-machined aluminum motorcycle tire valve stems designed for easier inflation and secure rim mounting.

These valve stems combine lightweight 6061-T6 aluminum with a hard-anodized finish and a right-angle design to simplify tire inflation on sport and street motorcycles. Made as a matched pair, they fit rims drilled for approximately 8.3 mm (0.357") valve holes and include locking nuts for a firm, stable attachment.

How do these 90° valve stems make tire inflation simpler?

The right-angle (90°) outlet turns the valve head away from the wheel face, creating easier access with air chucks and pressure gauges, especially on bikes with tight brake calipers or deep-set rims. You won’t need to contort your hand to reach the valve, which speeds up routine pressure checks and pumping.

• 90° bending places the valve head outward for straightforward access
• Compatible with standard tire gauges and air chucks
• Saves time during pit stops or roadside inflation

Are these valve stems durable enough for regular riding?

Yes — they are machined from 6061-T6 aluminum and finished with hard anodizing for improved corrosion resistance and surface strength. The metal construction resists bending and fading better than plastic alternatives, and the included locking nuts secure the stem to the rim to reduce movement under load.

• 6061-T6 aluminum body for high strength-to-weight ratio
• Hard anodized surface for wear and corrosion resistance
• Locking nuts prevent loosening and unwanted bending

Will these fit my motorcycle wheels and how do I install them?

The pair fits rims drilled for about 8.3 mm (0.357") valve holes; tolerance up to +0.3 mm accommodates common drilling variations. Installation is straightforward: insert the stem through the rim, hand-tighten the included nut, then snug with a wrench to seat it securely—no special tools required.

• Designed for 8.3 mm (0.357") valve hole diameter with slight tolerance
• Includes locking nuts for a secure, tool-friendly fit
• Compatible with many sportbike brands including Aprilia, Ducati, KTM

Do these valve stems require ongoing maintenance or replacement?

Routine checks are minimal: inspect the stem and nut for tightness and any visible damage and replace if threads are stripped or the stem becomes bent. The anodized finish reduces corrosion, but periodic cleaning and checking the seal will keep the valve performing reliably.

• Check tightness and condition during regular tire maintenance
• Replace if physical damage or leaking appears
• Anodized finish reduces corrosion, lengthening service life

Who is this for: Riders who want a practical upgrade for easier tire inflation and a durable, race-inspired aesthetic. These valve stems work well for sport and street motorcyclists—owners of Aprilia, Ducati, KTM and similar bikes—seeking a compact, reliable hardware upgrade that simplifies pressure checks while adding a black anodized look. Each purchase includes a pair of TV25AL valve stems and locking nuts, plus customer support for installation questions or fit guidance.