We’ve got some exciting news—our shop has a brand new name and website, acr.nz!

We are formerly known as Outrider Motorcycles and now changing to ACR - Automotive Components Refinishing.

In the past year, we’ve had some big changes, so what better way to enter the next chapter of our journey than with a fresh brand identity?

Outrider Motorcycles has been an integral part of this growth and we’ve made some amazing memories along the way—and now, we’re excited to announce that we’re taking it up a notch!

Isotropic Super Finishing

Wherever metal surfaces come into contact with each other contact-stresses and friction occur. This friction results in heat, loss of surface material, increased maintenance, and can lead to failure of parts.

These conditions regulate and reduce the performance and compromise the design of the component.

Super-finishing is a means of regaining those losses by producing a superfine finish where it is most needed. 

The process is carried out in specially designed commercial equipment that is then utilised with high density, non-abrasive ceramic media and specially formulated metal finishing compounds.

This process results in a metallic surface that can operate at cooler temperatures, with greater efficiency, whilst extending the life of the part and reducing maintenance and break-in periods

Give Us a Call +64 21 940 949 / Email us info@outridermotorcycles.com


What is Super Finishing?

Whenever metal is manufactured, machined, or altered, a surface texture is generated. These processes such as grinding (abrasive cutting), polishing, lapping, abrasive blasting, honing, milling, etching, or chemical milling. 

The resulting texture has peaks and troughs, similar to the painted surface of your vehicle. This texture will vary between a vertical, horizontal, radial, circular, or cross hatch finish.

When these rough surfaces are opposing each other within a high stress environment such as within a mechanical system in an engine or transmission, stress & heat can lead to failure of an individual component within that system, resulting in cost for repairs, replacement, or machining costs.

The Super Finishing process uses a chemical and vibratory process to lower the Surface Ra (roughness) to as close to zero as possible to achieve an Isotropic Surface Finish. This finish is referred to as an Isotropic Surface texture

This isotropic surface texture and lowered Ra (roughness) then allows the two opposing metallic surfaces to operate with reduced friction, enhanced efficiency, lower heat generation, increased lubricity efficiency, lowered metallic stresses, which results in achieving the benefits of the Super Finishing process. 

The Benefits of Super Finishing

The use of mass finishing equipment for descaling and cleaning applications completely eliminates the need for hand finishing which saves you a considerable amount of time and money.

  • Increase Fuel Economy
  • Reduce Contact Fatigue
  • Increase Power Density
  • Lower Operating Temperature
  • Extend Mean Time Between Maintenance
  • Reduce Friction
  • Increase Part Durability
  • Improve Corrosion Resistance
  • Reduce Wear
  • Reduce Lubrication Requirements and Cost
  • Improve Oil Retention Properties
  • Reduce Contact and Bending Fatigue
  • Improve Pitting Resistance
  • Reduce Vibration and Noise
  • Reduce Applied Torque Requirements
  • Reduce Maintenance Costs

Super Finishing Applications

The Super Finishing process is suitable to many categories of engine and gearing components. The process can be utilised in high performance power sports, Motocross, Vintage & Classic engine and gear components, large capacity engine components (Big Twin Motorcycle Engines), and Marine and Aviation components.

Applications include:

  • Crank Shaft Assemblies
  • Connecting Rods
  • Gudgeon Pins
  • Cam Shafts
  • Lifters
  • Transmissions
  • Drive Shaft and Final Drive Assemblies
  • Gears
  • Oil Pump Gears