Motorcycle Chassis and Suspension Specialists
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ROAD/RACE  solutions FORK  equipment SHOCK  equipment FORK  services/mods SHOCK  services/mods
                 
                 
   
     
                 
             
                 
               
    front fork  equipment, products and parts   ^  
                 
               
       

front fork units

Modifications to existing units, restore old to new or high quality replacement units
     
               
    Front Fork Tubes    

fork tubes

Hardchrome or Gold-Nitride to existing fork tubes
High quality replacement fork tubes
     
               
    Steering Dampers    

steering dampers

We supply (and repair) steering enhancements by leading manufacturers including all fixtures and fittings. A steering damper's job on a roadbike is to control side-to-side oscillations of the front wheel (headshake). Most headshake problems, especially with an application of sports/touring come from the rear shock. It unloads the front as the back squats too far, and this causes headshake in most situations. As an extreme example - consider a Race Bike where the front wheel will very likely come off the track. If it hits a bump when it comes down it can cause headshake; the job of a steering damper is to stop these oscillations. They may be of a particular amplitude to not self-cancel. The steering damper does this for you.
     
               
    PMA VP3/VP4
 
   

VP3 VP4 fork cartridge valves

ProMechA are pleased to release a new series of valves for both fork and shock. Designed in-house, our new system offers the greatest scope for tuning ever. Pictured are our VP4 20mm kits - unique, due to the ability to modify port dimensions to suit the application; allowing a broad range of motorcycle types and riding styles to be accommodated and giving far greater scope for tuning.
  Australian made  
               
       

provalve damping control kit

ProMechA have developed the PROVALVE for conventional forks which offers a full 3 way lo/mid and high speed compression damping with an in-built hydraulic anti-dive circuit. With its integral dive control unit and shimstack adjustable damping control, the Provalve will give your conventional fork set the performance of a cartridge unit.
  Australian made  
                 
        The ability to fine-tune suspension is increased enormously allowing for a rider-specific set-up based on weight, riding style and application over and above any standard suspension. Because of the multi-stage shimstack configuration, we can separately control dive rate, lo/mid and hi-speed compression damping.  Removing the fork cap and spring allows removal of the Provalve which then can easily be adjusted.      
                 
        When fitted with the correct spring and rebound modifications, your conventional fork set will be more than a challenge for the very best production motorcycle.
Promecha Provalves are an Aussie product. The kit comes with an assortment of different size shims and instructions. Easy to deal with, made from billet aluminium and makes a huge difference in handling. See Hold That Road and Serious Suspension for provalve results.
     
                 
                 
               
    rear shock  equipment, products and parts   ^  
               
    Shock Unit    

rear shock units

We supply aftermarket shocks from all leading manufacturers and customised shocks built to order at varying cost (dependent on brand and design features).

Your purchase choice will depend upon the level of performance you want to gain from modifying your suspension.
     
                 
       

rear shock units

Modifications to existing units. For the rear shock, a new spring and a revalve will take a lot of the harsh feel out of the shock, and will improve plushness and help control squat. These mods will give you a superior shock when compared to the standard unit.

The aftermarket shock will have an advantage, mostly in the way the adjusters work, the piston design and the slippery surface finishes. 
     
               
       

custom shocks built to order

We can restore old shocks to new or build new shocks customised to your requirements and application. 
  Australian made  
               
    PMA VP3/VP4
 
   

VP3 VP4 shock valves

ProMechA are pleased to release a new series of valves for both fork and shock. Designed in-house, our new system offers the greatest scope for tuning ever. Pictured are our VP4 20mm kits - unique, due to the ability to modify port dimensions to suit the application; allowing a broad range of motorcycle types and riding styles to be accommodated and giving far greater scope for tuning.
  Australian made  
               
    PMA Shock Pistons    

pma 40/46 shock piston

Modern sportsbikes have many compromises to shock design. With our exclusive piston design, we are able to maximise feel and control for all modern sports and touring bikes. We can tailor port dimensions to give just the right feel for any linkaged rear suspension design. 
  Australian made  
               
       

squat control valves

Pictured is one of our three types of Shock Flow Valves providing increased corner exit stability and exceptional lo-speed rebound damping; controlling rear suspension on off throttle and cornering forces. 
  Australian made  
                 
                 
               
    springs and parts   ^  
               
       

fork springs

Springs are the most important part of your suspension. Yet people give surprisingly little attention to matching spring rates to their weight and their riding style; see technical article Springs - the basics
     
               
       

shock springs

It is important to match spring rates to your weight and riding style ensuring that front and rear rates are complementary, with damping to suit. We supply springs from all leading brands, which are universally manufactured to ISO standards. Contrary to the belief of some, springs do not 'wear out' - it is usually old and over-used damping oil that causes this sensation.
     
                 
               
    Motorcycle Suspension Tools

 

 

suspension tools


Shock Bleed Tool and pistons

shock bullet tools

Fork oil level tool

  Australian made  
               
    Fork parts    

fork parts

Fork Parts Front Fork Bushes Front Fork Seals etc.
Parts for all makes and models
     
               
    Shock parts    

shock parts

Shock Parts, shock bladders, gas caps, spring collars, spring seats, shock seal heads etc. Parts for all makes and models.
     
                 
    Shock Parts    

shock parts

Shock Parts, shock bladders, gas caps, spring collars, spring seats etc. Parts for all makes and models 
     
                 
    Shock Bladder    

shock parts

Shock Parts, shock bladders, gas caps, spring collars, spring seats etc. Parts for all makes and models 
     
               
    Seals    

seals

     
                 
    Bushes    

bushes

     
                 
    Stroke Marker    

Stroke marker

     
                 
          ProMechA   ^  
                 
                 
         
    front fork  modifications   ^  
           
    Below is a brief description of what's involved. Our quotes are fixed for forks and shocks which are off the bike. Any additional work that may be required will be quoted/advised.
 
     
         
   

fork service

Fully disassemble and clean all parts including shims, valves and adjusters. Refill oil to correct level. Worn seals, bushes, chrome plating are additional. See Maintenance Article for applicable service periods and Damping and Oils for the importance of oil and its usage in suspension performance.
 
  Ohlin Forks  
       
   

fork revalve & service

Full Service as above. Revalved compression and rebound shimstacks to suit rider style, type of riding, rider feel, rider weight and load carried, and includes dive control circuit. Revalving standard parts matches damping to springs; delivering good results with our individualised setup giving a big improvement over stock. See Project ZED and Suspended Animation for revalving results.
 
   
         
   

showa conversion kit comp & rebound

We convert your standard inverse bending pistons or big port Showa pistons using the Showa four port pistons. These pistons are similar to what is used in many sportbikes, e.g. CBR1000/600 etc. By using these pistons you can achieve a better hi-speed feel due to the port size being better suited to the faster roadbike/ride-day applications and still remove harshness.
 
     
         
   

provalve damping control kit

reb. mod, service & set-up
Conventional damping systems (damper tube) have many shortcomings, excessive dive, harshness, very poor traction feel. All of these problems can be corrected with our exclusive shimstack driven Provalve high performance damping kit. Because of our multi-stage shimstack configuration, we can separately control dive rate, lo/mid and hi speed compression damping all in one easy to install kit. When fitted with the correct spring and rebound modifications as outlined in our instructions Your conventional fork set will be more than a challenge for the very best sportsbike. See Hold That Road and Serious Suspension for provalve results.
 
  Provalve  
         
   

road/rideday PMA VP3 conversion *

20mm VP3 Compression valve and standard rebound mod. including dive control. All the benefits of a much better compression valve and modified rebound to suit the spring.
 
   
       
   

sports/rideday PMA VP3 *

20mm VP3 Compression and Rebound valves + service and set-up. The best damping range for road and track day work, use your adjusters for road feel versus track.
 
   
      PMA VP3 + VP4 Fork and Shock valves  
   

race bike conversion PMA VP4 *

20mm VP4 Racebike Compression and Rebound valves + service and set-up. Compounded sports tyres or slicks need the latest technology in valve design and shimstack configuration for best brake and turn-in control without harshness. Adjusters can be reset for firm roadwork. * For best results, our PMA VP3 and VP4 road bike tunable port pistons give any rider/bike combination the feel and control for wide range damping touring plushness or narrow focus racebike precision due to the ability to modify port dimensions to suit the application; allowing a broad range of motorcycle types and riding styles to be accommodated and giving far greater scope for tuning.
 
   
         
   

fork lowering and service

Price includes full service as above. Lowering is done internally (front and rear) to maintain handling characteristics. How much a bike can be lowered before handling and safety become an issue is dependent on bike design and application. For info on your particular make and model call for advice on 03 9560 2770.

Note: The lowering process is reversible, should you wish to change it back in the future.
 

  Fork parts  
         
   

fork leg straightening (ea)

 
   
      Fork Tubes  
   

rechrome fork legs (pr)

Hardchrome re-plating, grinding and polishing to correct tolerances.
 
   
       
   

gold-nitride existing fork tubes

 
   
         
   

fork removal

Labour charge for removal and replacement of forks to bike where necessary
 
   
           
           
         
    rear shock  modifications   ^  
           
    Below is a brief description of what's involved. Our quotes are fixed for forks and shocks which are off the bike. Any additional work that may be required will be quoted/advised.
 
     
      Shock Unit  
   

shock service

Dismantle and reassemble shock, check all components for wear or damage and replace and/or repair where necessary. Re-oil and re-gas. See Maintenance Article for applicable service periods and Damping and Oils for the importance of oil and its usage in suspension performance.
 
   
       
   

shock revalve and service

We dismantle &  reassemble shock, checking all components for wear or damage & replace and repair parts where necessary. We then revalve according to rider application, riding style and weight.

Many shock settings are harsh with limited damping range. Not enough happens early in the bump cycle to slow and control the bikes progress over dirt surfaces. We modify your shock to build in smooth, plush feel and give you the ability to control your bike and improve confidence. See Project ZED and Suspended Animation for published results.
 

   
      Shock rebuild  
   

shock service non-rebuildable

Dismantle and reassemble shock, check all components for wear or damage and replace and/or repair where necessary. Re-oil and re-gas. We convert your shock to fully rebuildable.

Over the years we have not yet found a shock that we can't rebuild. Most modern shocks (let's say from late 80's) are able to be converted into a re-buildable and fully serviceable shock. Some require machining to have them opened and then we install clips and regas valve to complete the job.
 

   
       
   

revalve and service non-rebuildable

Dismantle and reassemble shock, check all components for wear or damage and replace and/or repair where necessary. Revalve according to rider application, riding style and weight. Re-oil and re-gas.
 
   
         
   

PMA 40/46 shock conversion


Modern sportsbikes have many compromises to shock design. With our exclusive piston design, we are able to maximise feel and control for all modern sports and touring bikes. We can tailor port dimensions to give just the right feel for any linkaged rear suspension design. PMA Shock conversion includes revalve and service and set-up.
 
   
         
   

squat control valve

Increased stability by controlling rear suspension on off throttle and cornering forces.
 
  Shock Flow Valve  
       
   

twin shock service

Dismantle and reassemble shock, check all components for wear or damage and replace and/or repair where necessary. Re-oil
 
   
       
   

twin shock damping mods

We dismantle &  reassemble shock, checking all components for wear or damage and replace and repair parts where necessary. We then revalve and modify the pistons according to rider application, riding style and weight.
 
  Shock parts  
         
   

shock lowering and service

Price includes full service as above. Lowering is done internally (front and rear) to maintain handling characteristics. How much a bike can be lowered before handling and safety become an issue is dependent on bike design and application. For info on your particular make and model call for advice on 03 9560 2770.

Note: The lowering process is reversible, should you wish to change it back in the future.
 

   
       
   

rechrome shock shaft

 
   
           
   

shock removal

Labour charge for removal and replacement of shock to bike where necessary