CST Ultra Light Tube 700c
$70.00
Color Options
25-32CSize Options
60mm
80mm
CST Ultra Light Tube 700c
Upgrade your ride with the CST Ultra-Light Tube 700c — a precision-engineered, lightweight road bike inner tube designed for cyclists who demand reduced rotational weight, faster acceleration, and enhanced ride feel without compromising reliability. Featuring an ultra-light butyl construction that's 40% lighter than standard inner tubes, the CST Ultra-Light Tube is the ideal upgrade for road racing, climbing, sportives, and weight-conscious performance riders. Available with 60mm or 80mm Presta valves.
Key Features & Benefits
- Ultra-Lightweight Construction – Engineered to be 40% lighter than standard inner tubes, dramatically reducing rotational mass for snappier acceleration, easier climbing, and a more responsive ride feel.
- Two Valve Length Options – Choose between 60mm or 80mm Presta valves to match your specific rim depth — perfect for everything from shallow training wheels to deep-section aero rims.
- Precision Presta Valve (~6mm diameter) – Standard road-spec Presta valve fits all modern road bike rims and ensures secure, leak-free inflation.
- Versatile Tyre Compatibility – Fits 700×25C to 700×32C tyres, covering the most popular road, endurance, and gravel-light tyre widths.
Product Specifications
| Specification | 60mm Presta Valve | 80mm Presta Valve |
|---|---|---|
| Tyre Size | 700×25/32C | 700×25/32C |
| Valve Type | Presta (~6mm dia.) | Presta (~6mm dia.) |
| Valve Length | 60mm | 80mm |
| Recommended Rim Depth | 35–50mm | 50–70mm |
| Approx. Weight | ~74g | ~78g |
| Weight Savings | ~40% lighter than standard tubes | ~40% lighter than standard tubes |
How to Choose the Right Valve Length
Selecting the correct Presta valve length is essential for proper inflation and secure fit:
- Valve Diameter: All Presta valves measure approximately 6mm in diameter, fitting standard Presta-drilled road rims.
- Valve Length Rule of Thumb: Choose a valve that extends at least 2cm beyond the rim depth for easy pump head attachment and hassle-free inflation.
- 60mm Valve: Best suited for 35–50mm rim depths
- 80mm Valve: Best suited for 50–70mm rim depths
