Stumpjumper Evo

In-store now

Stumpjumper Evo

In-store now

Stumpjumper Evo

In-store now

Stumpjumper Evo

In-store now

Welcome to Chain Reaction NZ

Since 2000, we have helped thousands of Christchurch riders achieve their goals. We support our cycling community through trail building, athlete support, sponsoring local club races and by offering great service with the best bikes and gear available. Our friendly, helpful staff are all riders and keen to help you enjoy bikes as much as we do. Come in, have a look, get some advice and maybe take a bike for a spin. We're happy to help.

We are a group of passionate cyclists and skilled individuals. Professional, energetic and engaged in the community, we're happy to share our bike passion with the people of Canterbury. Independently owned, we've been selling and servicing bikes and gear since 2000.

4/218 Moorhouse Ave, Christchurch, NZ
03 943 4925


Mon-Fri 8:30-5:30
Sat 9-5
Sun 10-4

Connect with us.



Latest from the blog.


S-Works Aethos Founder's Edition

The Specialized S-Works Aethos Founder's Edition is built purely for the love of riding. Limited to 300 worldwide, this is the one and only Aethos Founder's Edition in New Zealand and we're really excited to deliver it to one of our best customers.

Read on


All-New 2021 Stumpjumper

The all-new Stumpjumper combines the lightness and pedalling efficiency of the Epic Evo and capability of the Stumpjumper Evo into one awesome all-around trail bike. From after work trail rides in the Port Hills to all-day Craigieburn missions, this new Stumpjumper is the lightest, most efficient, most all-around capable Stumpjumper ever.

Read on


All-New 2021 Stumpjumper Evo

The all-new Stumpjumper Evo is a capable and lively trail bike built to full-send down the hill with the efficiency to pedal back up. Featuring 160/150mm of front/rear performance tuned travel, new suspension kinematics and maximum adjustability via independent head angle and bottom bracket height adjustment, this bike is a real ripper.

Read on


See more bloggage.

Comfort, performance and efficiency.

Body Geometry Fit offers benefits to all rider types, mountain or road. It's a comprehensive process that creates the perfect union between bike and body. Our trained Body Geometry Fit technicians can have you on your way to a pleasant, healthy riding experience.

Learn more.

We service all brands of bikes.

We have a professional, comprehensive workshop capable of servicing all bike brands, from a quick tune-up to full suspension servicing and custom builds. The boys have years of experience, are trained up on all the latest and greatest tech and are avid cyclists who care about your bike as much as you do.

Book a service online.


Let's stay in touch.