Are you competing in the Spring Challenge or just want to learn more about bike maintenance and nutrition? If so, these events are for you! It'll be a fun, informative night of bikes and bubbles.

FREE admission. Refreshments provided.


2 dates

Wednesday, 5 July 6:30pm - 8:00ish
Wednesday, 30 Aug 6:30pm - 8:00ish

Led by Rosey Acker, Rosie Shakespeare and Whitney Dagg, we'll be covering everything you need to know to prepare for and succeed at this year's Spring Challenge.

Limited to 15 spots! The first date is almost full, get in quick. Click below to register on Facebook.

Rosey is back!

Rosey is back and available for your Body Geometry Fit, but she's only here for a couple more weeks. Appointments only. Contact us to book your Body Geometry Fit.
Learn more

Latest from the blog

Introducing the redesigned 2018 Specialized Diverge!
  • Future Shock
  • More tyre clearance
  • Slacker gravel geometry
Features and specs here
Cyclocross season is upon us.

Click below for last round's edit feature a plethora of mud and carnage at Spencer Park.

Watch video here

$700 OFF New Ultegra Di2 R8050

$2,599! $3,299 RRP

Preorder only

Ultegra Di2 R8050 is finally out (due in 2 weeks) and we've set up a super deal. R8050 is the electronic Di2 rim brake version.

Bottom bracket not included. Available in compact, mid-compact and full-size chainrings and up to a 32T rear cassette for those big hills. We can fit groupset for $150.
Order online

$300 OFF XT 1x11 upgrade

$699 $999 RRP

Give your MTB new life with a quality 1x11 drivetrain for cheap. This deal is for a XT drivetrain with 11-46T cassette. Bottom bracket not included. We can fit for $100.
Order online

$1000 OFF XT Di2 upgrade

$1499+ $2499+ RRP

Now is the time to go electronic for cheap! This is a Di2 drivetrain in either 1x or 2x, your choice. Bottom bracket not included. We can fit for an additional $150.
Order online

$141 OFF XT brakeset with rotors

$449 $590 RRP

Upgrade to the gold-standard of MTB brakes, Shimano XT's. Includes everything you need. Front and rear brakesets, Ice-Tech rotors and adapters. We can fit for an additional $60 in labour.
Order online

$41 OFF Saint pedals

$79 $120 RRP

The go-to flat pedal for so many, the Shimano Saint is a good combination of reliability, weight and price that's hard to beat.
Order online

$141 OFF Evoc bike bag
$499 $640 RRP

Going somewhere on holiday this winter? Take your bike with you! The easiest, most secure way to transport a bike.
Order online

Stay fit and energetic

We have a complete range of trainers in-store from CycleOps and Tacx, including the top-end Neo and Flux direct drive units.
Shop trainers

Stay warm and dry

We have a wide range of Madison waterproof jackets, gloves, thermals and headwear in-store.
See the range


2017 Rockhopper Comp 29

$1300 RRP $1099

Hydraulic brakes and Suntour air fork for a fast rolling 29er.
Click here for specs
2017 Rockhopper Expert 29

$1600 RRP $1299

2x10 SLX/SRAM drivetrain, Manitou air fork, a good trail 29er.
Click here for specs
2017 Rocky Instinct 930 MSL

$4999 RRP $3999

Carbon full-suspension 29er trail bike for cheap!
Click here for specs
2017 Turbo Levo Hardtail 29

$6000 RRP $5000

The best way to get into a pedal-assist bike. See store for demos.
Click here for specs

See all Winter Specials


Keep your bike running smoothly through winter with a service.

Forks take a beating in the winter months with mud and grit all over your stanchions. If you didn't service your suspension after summer, don't let it get too grimy!

Also consider your tyres. Some Specialized bikes come with the Slaughter in the rear, which is a super fast summer tyre, but not all that great in the wet. A Ground Control or even a Butcher is a great rear winter tyre. We can also top up your sealant.

Service Packages

Chain Reaction
218 Moorhouse Ave
Christchurch, NZ
03 943 4925
*Limited stock and availability. Contact us or see store for details.
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