Peaty's X Chris King MK2 Tubeless Valves Presta - Tool Caps & Insert

In this review the Peaty's X Chris King MK2 Tubeless Valves are judged as a small but meaningful upgrade for riders who value finish, convenience and long-term use. The biggest reason to buy is the integrated tool caps and durable 7075 aluminum construction that combine everyday functionality with a premium look; riders fitting tubeless setups on MTB, road or gravel bikes will appreciate the time saved when topping up sealant or tightening spokes. This review focuses on build, fit and real-world practicality rather than marketing copy.

Key Features

• Integrated tool caps: The valve caps include a valve core remover and a spoke key for standard 3.4mm nipples, making on-wheel maintenance quick and tool-free.
• X-cut base for inserts: Channels cut into the valve base let air and sealant pass through when run with tire inserts, improving compatibility with insert systems.
• Easy fit and protection: Large soft rubber bases and integrated O-rings create an airtight seal and stop lock rings scratching rims during installation.
• Lightweight strength: Machined from 7075 aluminium, the stems stay light while offering high strength for aggressive use on enduro, DH or road setups.
• Two length options: Available in 42mm and 60mm to suit a wide range of rim depths from shallow road rims to deep MTB rims.
• Valves for life guarantee: Backed by a long-term promise and matched colors from Chris King, these valves are built to last and look good doing it.

Who It's For

The MK2 valves are aimed at riders who run tubeless systems and want convenience on the trail or in the workshop; bike mechanics, gravel and road riders fitting tubeless tires, and MTB riders using inserts will all find the integrated wrench and core remover especially useful. The premium finish and durable 7075 construction also suit owners of carbon rims who want protective O-rings and secure sealing.

Riders who do not run tubeless tires, or who prefer the absolute lightest possible setup with no additional tool features, may find the integrated caps unnecessary. Also, those requiring non-Presta valve types should look elsewhere since these are Presta specific.

Pros & Cons

Pros

• High-quality 7075 aluminium construction combines light weight with strength and a premium finish praised by customers.
• Integrated spoke key and valve core remover cap make sealant top-ups and spoke tightening faster and more convenient on the go.
• X-cut base and channels provide compatibility with tire inserts and ensure sealant/air flow when needed.

Cons

• The product is Presta only, so it is not suitable for Schrader valve users without adapters.
• Those focused purely on absolute minimal weight may consider the added tool features unnecessary.

Specifications

Brand	Peaty's x Chris King
Material	7075 aluminium
Valve type	Presta (tubeless)
Lengths	42mm and 60mm
Included tools	Integrated valve core remover cap and spoke key cap (3.4mm nipples)
Compatibility	Insert compatible with X-cut base; MTB, road, gravel, cyclocross rims

Our Verdict

The Peaty's X Chris King MK2 Tubeless Valves are a well thought-out upgrade for tubeless riders who want durability and on-wheel convenience; the integrated spoke key and core remover speed routine maintenance while the 7075 aluminium and protective O-rings protect rims and last. For most tubeless MTB, road and gravel riders this represents strong value because it replaces separate tools and improves compatibility with inserts.

Frequently Asked Questions

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

What lengths are available?
They come in 42mm and 60mm lengths to suit a range of rim depths.

Do the caps really function as tools?
Yes, the caps incorporate a valve core remover and a spoke key sized for standard 3.4mm spoke nipples, useful for topping up sealant and tightening spokes.