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

David Alexander in “Steeler” Wins the Masport Cup

Waverley racer David Alexander (centre) is flanked by his GP777 The Steeler crew Fraser Middleton, Mark Crawford (left) and Phil Crawford and John Hodges. Absent: Grant Rivers. PHOTO: Jeremy Ward By: Iain Hyndman Iain Hyndman is a reporter for the Wanganui Chronicle...

Dean Scott Holden Ute Super Sedan

Dean Scott can now claim fastest Street Car in Waganui after the weekends Drag racing saw  him shave half a second off his personal best time. Running 7,81 @177mph. Dean and his crew had a frustrating year last season fighting  to get the power to the track without...

Rivers Family Racing Dragster

The Team travelled to Taupo for a one day meeting on New Years Eve 2017. The Dragster was using the liltte 427 Blown Engine with big gears and wheels suited to the big Engine and a geasy at times track the best pass was 7.60 at 177mph. The Team made it through to the...

Need An Expert Touch for Your Engine?