Peaty's X Chris King MK2 Tubeless Valves Presta - Integrated Tools

Our review of Peaty's X Chris King MK2 Tubeless Valves finds them best for riders who want an all-in-one, durable tubeless solution that cleans up both function and appearance. The single biggest reason to buy is the integrated toolset: each valve cap doubles as a valve core remover and a 3.4mm spoke key, saving time when topping up sealant or tightening spokes on trail or at home. Built from 7075 aluminium with soft rubber bases and X-cut compatibility for inserts, these valves aim to be a long-term upgrade for mountain, gravel and road tubeless wheels.

Key Features

• Integrated valve core remover: The screw-on cap removes and stores the valve core so adding sealant is quick and tidy without extra tools.
• Built-in spoke key: A 3.4mm spoke key in the cap lets riders address loose spokes roadside, avoiding a separate wrench in the pack.
• X-cut base: Channels in the valve base allow air and sealant to pass when using tire inserts, maintaining compatibility with insert systems.
• Soft rubber sealing base: Large rubber bases and O-rings create an airtight seal and protect rims from scratches during installation.
• 7075 aluminium construction: Lightweight high-strength material resists corrosion and keeps weight low while looking premium.

Who It's For

These valves suit riders who run tubeless setups across disciplines - MTB, road, gravel and cyclocross - and who use inserts or heavy-duty setups like enduro and DH. If you value neat on-bike tools and color-matched components, the collaboration with Chris King brings dependable finishes and a valves-for-life mindset that appeals to long-term users.

Less suitable are casual commuters or riders who never seal their tires or rarely need to touch spokes; if you only change inner tubes or prefer minimal extras on your rims, a basic presta valve will be cheaper and simpler.

Pros & Cons

Pros

• Integrated core remover and spoke key combine two useful tools into the valve cap for on-trail repairs.
• Excellent sealing thanks to large rubber base and O-rings, with solid compatibility with inserts.
• High-quality 7075 aluminium construction and attractive finish that holds up over time.

Cons

• Higher cost than basic valves due to materials and integrated tools, so less ideal for budget builds.
• Only one spoke key size included (standard 3.4mm), so some wheel builds may need an additional key.

Specifications

Our Verdict

Peaty's X Chris King MK2 Tubeless Valves are a practical upgrade for riders who value integrated tools, reliable sealing and a premium aluminium finish. They are good value for anyone running tubeless with inserts or who wants the convenience of a built-in core remover and spoke key, though they are a step up in price from basic valves.

Frequently Asked Questions

Are these valves compatible with tubeless tire inserts?
Yes, the X-cut base is designed to allow air and sealant to pass when inserts are pushed against the valve, making them compatible with common insert systems.

Do they include a spoke key for all nipples?
They include a spoke key cap for standard 3.4mm nipples; some wheel builds with nonstandard nipples may still require a separate tool.

What lengths are available?
The valves are offered in 42mm and 60mm lengths to suit various rim depths.