V8 Engine Specialists & All Mechanical Repairs

We Service All Makes & Models. Qualified Vehicle Certifiers for Cars & Motorcycles.

Hydroplane Boats

Rivers Speed & Spares have had a long relationship with the Annihilator Race Team starting back in 1993.

Drag Racing

A One Stop Shop for all your needs from engine building, tuning, fabrication and chassis work.

Circuit Racing

We work on all types of vehicles and can design and fabricate to meet your requirements.  Let us help you build that vehicle you really want.

Hot Rods

e pride ourselves on turning out top quality workmanship on every job, from engine rebuilds, turn key rebuilds, modifications and also able to complete LVVTA certification on modified vehicles.



Grant is an authorised vehicle certifier with the LVVTA. Once a vehicle is modified from its original state or is a scratch built, it requires certification to ensure that it is safe to operate on the road, and comply with the legal safety requirements.

ACC & Enable

We are contract holders for Levels 1 and 2 vehicle modifications. Our goal is to provide vehicle modifications for clients who have been identified by ACC as requiring vehicle modifications to meet their injury related needs.

Latest Blog Posts

Masterton December Drag Racing

December 8th and 9th saw a great weekends racing at the Masterton Motorplex. the weather was very hot and sunny which saw the track temperture up to 130f. This meant the track was too hot for the vht to be applied during the day and cars and bikes had some diffulculty...

Nelson Drag Racing 25th Anniversary Easter Event

The Team travelled to nelson for the one day Drags. Nelson is always an enjoyable Event and Andrians favourite track. The Kieth Whiting North v South is also an important part of the trip. Beautiful day in Motueka but with the hint of showers in the late afternoon....

Two Runner up places at NZDRA 50th Nationals

History repeated for Adrian Rivers (pictured) and sister Nicole at the 50th annual National Drag Racing Championships in Masterton at the weekend. By: Iain Hyndman Iain Hyndman is a reporter for the Wanganui Chronicle iain.hyndman@wanganuichronicle.co.nzLoveThisPaper...

Need An Expert Touch for Your Engine?