REACTION HPA

When form meets function, the result can be stunning. The Reaction HPA's smooth lines and super-clean tube joints are a case in point – great to look at, but packed with practical features too. Trail-capable performance is matched by everyday practicality, with touches like mounting points for a compatible ACID tool, mudguards and Semi-Integrated Carrier 2.1. Trail or tour? It's your choice.

Carbon look aluminium frame

Carbon look aluminium frame

Careful tube profiling and special finishing processes give the welded aluminium frame the organic appearance of carbon – clean and elegant.

Chainstay protector

Chainstay protector

A specially shaped, soft but durable chainstay protector helps prevent paint damage and reduces noise from chain slap on rough trails.

Dropper post ready

Dropper post ready

Designed to accept a 31.6mm dropper post, to make it quick and easy to lower the saddle in any situation.

Dropper post ready

Dropper post ready

Internal cable routing ready to accept a 31.6mm dropper post upgrade, for quick and easy saddle lowering in any situation.

Internal cable routing

Internal cable routing

Complementing the frame's clean design, cables are routed via the headset and an internal frame protector, ensuring a clutter-free appearance.

SIC 2.1 carrier

SIC 2.1 carrier

Sturdy SIC 2.1 carrier mounts easily and integrates neatly with compatible ACID mudguards for a clean look.

Top tube mounting points

Top tube mounting points

Mounting points under the top tube fit a compatible ACID trail tool, so you're ready for any eventuality.

UDH rear end

UDH rear end

The Universal Derailleur Hanger is a tough, future-proof standard that helps ensure accurate gear changes.