Peaty's X Chris King MK2 Tubeless Valves - Integrated Tool Caps

In this review the Peaty's X Chris King MK2 Tubeless Valves are assessed for riders who want durable, functional tubeless valves with a touch of style. The single biggest reason to buy is the blend of integrated tools and reliable sealing: these valves combine an integrated valve core remover and a spoke key cap with a large soft base and o-rings, making on-bike maintenance and insert compatibility straightforward. They suit mountain, road and gravel bikes where ease of topping up sealant and tightening spokes without extra tools matters.

Key Features

• Integrated valve core remover: The cap doubles as a valve core remover so adding sealant or removing cores can be done quickly without carrying a separate tool.
• Spoke key cap: The included spoke key fits standard 3.4mm nipples, letting riders tighten loose spokes trailside or in the workshop without searching for a wrench.
• X-cut base for insert compatibility: Channels cut into the valve base allow air and sealant to pass through when tire inserts press against them, ensuring compatibility with most inserts.
• Rim-friendly sealing: Integrated o-rings and a large soft rubber base create an airtight seal and prevent lock rings from scratching rims.
• High-strength 7075 aluminum: The lightweight 7075 construction gives strength for demanding use on MTB, enduro, DH and road setups while keeping weight low.
• Two length options: Available in 42mm and 60mm to fit common rim depths and tubeless setups.

Who It's For

The MK2 valves are best for cyclists who run tubeless systems on mountain bikes, gravel rigs or road bikes and want an integrated, durable solution for routine maintenance and sealant top-ups. Riders who use inserts such as CushCore or similar will appreciate the X-cut base and reliable seal when inserts are present.

These valves are less about low-cost disposables and more for those who value build quality and small integrated tools; if you want a cheap, one-off valve or require specialized non-Presta fittings, look elsewhere. They are aimed at riders who will keep and use valves for years rather than replace them seasonally.

Pros & Cons

Pros

• Integrated valve core remover and spoke key cap reduce the number of separate tools needed on rides.
• Excellent build quality and color accuracy from the Chris King collaboration make them durable and visually appealing.
• X-cut base and channels allow compatibility with tire inserts while maintaining airflow and sealant flow.
• O-rings and soft rubber base provide a secure, rim-friendly airtight seal.

Cons

• Priced and finished for longevity, these valves are higher-end compared with basic replacement stems, which may be unnecessary for casual riders.

Specifications

Brand	Peaty's (Chris King collaboration)
Material	7075 aluminium
Sizes	42mm and 60mm
Valve type	Presta, tubeless compatible
Included tools	Integrated valve core remover cap and spoke key cap (3.4mm)
Base feature	X-cut base and soft rubber sealing with o-rings

Our Verdict

The Peaty's X Chris King MK2 Tubeless Valves are a worthwhile upgrade for riders who value build quality, integrated utility and insert compatibility. They save time when topping up sealant or tightening spokes, seal reliably on a wide range of rims, and should last for years, making them good value for anyone who treats their tubeless setup as part of serious kit rather than disposable hardware.

Frequently Asked Questions

Do these valves work with tire inserts?
Yes, the X-cut base has channels that allow air and sealant to pass when inserts are pushed against the valve, making them compatible with most inserts.

What tools are included on the valve caps?
The caps include an integrated valve core remover and a spoke key sized for standard 3.4mm spoke nipples, so you can remove cores and tighten spokes without extra tools.

What sizes are available?
They are available in 42mm and 60mm lengths to suit different rim depths and tubeless setups.