Junior Motocross

Billet Machined Swingarm ends to suit all model YZ65cc racers.  These are ready to custom weld / fabricate into the existing oem swing arm resulting in a professional job. This mod extends the swing arm 30mm. 

-The axle at full forward in our end piece matches the full back position on the oem unit.   

We can install these in house here in our engineering dept and alloy weld on our swing arm jig for a very neat professional finish.  These arms modified are $695 inc parts. 

We do have a near new changeover unit for customers with New or close to new swing arms. We do not change over worn or damaged units. 

 

KYB YZ65 Fork Extension Kit.  Shorter Top out springs matched with custom billet longer caps allowing the increase in fork overall length with the benefit of added suspension travel.  +26mm over the OEM setup.

Kit Inlcudes Fork Cap and top out springs

Alloy Shock Collar lock ring to suit all YZ85 and YZ65 models. 

Fast lock up and adjustment with the 4mm hex bolt easily accessed and tensioned.  Barely a 1/4 turn of tension on the lock bolt will stop this lock ring turning,  allowing for fast adjustment track side .

We recommend 4-5N of tension only 

YZ 85/65 Complete Upgrade Kit.  Bundled together for complete bike setup and value

Kit Includes:

• 17mm Face shim Pistons and setting 
• Hydraulic Bottoming system
• Fast adjust Shock Collar
• High/Low Speed Compression Adjuster
• Nitrogen Gas Bladder Extension (YZ65 only) 

Upgrade kit to improve the YZ85 and YZ65 KYB fork action. 

With this KYB Mini fork obviously being produced to a budget, several parts have been omitted in comparison to its rival KTM racers and senior level bikes.  We found increased rider feel in the hands , less harsh bottom out and a Smoother more aligned fork all the way thru the stroke. 

During KYB 'rear shock' testing we still had the mini test pilots commenting on this fork setting and smooth action in both 85 and 65 bikes, amazing especially when we were testing the shock! 

The fork is importantly missing a hydraulic bottoming system in stock trim.  This has any serious tuner scared of allowing this bike to use full travel to avoid jarring harsh and dangerous bottom outs.  We found the plastic spring guides allow the fork spring to deflect excessively inside the fork during action causing poor action, excess wear and spring noise.

During testing we found increasing the shim shim size, custom piston ports and valving/setting to match allowed far more options in tuning and rider feel. 

Shim setting to suit a B level racer supplied 

Our kit includes  

• Close tolerance Spring guides 
• Hydro/Bottoming Stop cones 
• Hydro/Bottoming stop pistons 
• 17mm Face Compression Pistons 
• Valving Setting to suit the 17mm piston

 

Great value upgrade kit for the YZ85 Shock. High/low Compression adjuster and the fast adjust Shock Collar. Combined with the right valving setup and shock spring we have the rear of this mini sorted.

• High/Low Compression Adjuster
• Fast Adjust Shock Collar 

 

 

Our complete Hard parts Upgrade for the YZ65 Rear Shock. Take your KYB YZ65 shock to the next level. Suits the serious mini racer.

• Fast Adjust Shock Collar
• High/Low Speed Compression adjuster
• Extended Bladder Cap 

High Speed Compression adjustment for KYB Yamaha Mini shocks.  This transforms the shock action , improving high speed spike straight away due to its internal design but also allowing further tuning by adding or reducing spring preload to the shim stack via our external 12mm Hex adjuster.  Low speed comp remains the same, slot screw adjustment in 'clicks'.   A must to upgrade these shocks for the serious mini racer .