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Motor Mounts Bearing Cassettes Wheel Hubs Bearings Braces & Supports HDM Filter Cup HDM Oil Tube Adaptor Fuel and Vent Tube HDM Steering Lock Heat Protection Clutch & Chain Guard Chain & Sprockets HDM Catch Tank Pro Kart Filters Economy Kart Filters Catch Tank Filter HDM Billet Head Digatron Karting Gloves Burris Tires Tire Pressure Gauge Karting Wheels Karting Tools Tire Prep

A few karting tools are a must and some of just nice to have in the tool box. These tools manufactured by HDM are a must, you never know when you may need to make that unusual adjustment at the track.


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The Clutch Spring Height tool is used to accurately set the spring heights on your disk style clutch with vertical springs. Once the tool is zeroed out, simply slide the adaptor over the clutch spring until the base rests on the back of the clutch. Make a note of that measurement and then check the remaining springs. Your clutch manufacturer or blue printer can tell you what this height should be for your class. This standard tool fits Hortsman, Tomar, Stingers and most other brands with a screw style adjustment and small diameter springs.

We now offer the our clutch spring tool with an Anodized Purple adaptor at no extra cost.

Item Name: HDM Clutch Spring Setting Tool - 1" travel
Item Number: HDM-CS-1
Price: $35


(use drop down box with standard option below)


HDM also manufactures a clutch spring height tool specifically for the Buller - Bully Clutch. The bully uses a stud and nut style spring retainer so the standard tool will not work. This Bully tool has a special indicator tip so the spring height can be read from the flange on the adjusting nut. The reason we read on the flange is due to the fact that the hex part of the nut can become damaged and burred on top causing inaccurate readings. (clutch is not included in price)

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Item Name: HDM Bully Clutch Spring Tool - 1"
Item Number: HDM-CS-Bully-1
Price: $45.00

(select Bully option from drop down box)





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The Laser Sprocket Alignment tool is very easy to use. With the chain removed from the clutch driver and rear sprocket, simply slide the alignment tool down over the rear sprocket. Now rotate it until it looks to be pointing at the clutch driver. Push the button to ignite the laser. You can either adjust your motor mount (if it has side-to-side adjustment) or your sprocket hub so that the red dot from the laser hits directly on the clutch driver. 

The alignment calibration is preset at the factory before shipping. Anytime you need it recalibrated, simply send back to HDM and we will be glad to do recalibration of your tool for free (customer must pay shipping cost both ways)Call or email for Return Good Authorization number.

Our sprocket alignment tool is now available with Purple Anodizing at no extra cost.

Item Name: HDM Sprocket Laser Alignment Tool
Item Number: HDM-SPKT-Tool
Price: $35



By purchasing the laser alignment tool, the customer assumes all responsibility for the proper use of the laser pointing device. The laser pointing device is not manufactured by HDM. For any questions regarding the use of the laser device the user should contact the manufacturer directly. NEVER point the device into the eyes of any person. HDM nor the laser manufacture will not be held responsible for any injury or illness claimed to have been caused by the use of this device.

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The HDM Single Indicator block tool is a very useful tool for engine builders. It features a single indicator to measure valve lift. It also has relief for piston popup. This tool is complete with dial indicator, anodized billet aluminum fixture block and mount bolt.


Item Name: HDM Single Indicator Block Tool
Item Number: SINGLE-Block Tool
Price: $45


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The HDM Block tool is very useful for all engine builders. It feature three dial indicators that measure piston pop-up and valve lift on both intake and exhaust simultaneously. This tool comes complete with the dial indicators, anodized billet aluminum indicator fixture, and mounting bolts.

Item Name: HDM Block Cam Piston Valve Tool
Item Number: Block Tool
Price: $85





Spy Optics available online.

Thor Oil and Tire Prep now available.

Hyper Coil brand coil over springs are now available

Digatron Gauges and Instruments online ordering.

Rivets and Sheet Metal now available.



 Latest Updates...

HDM has added the following to our product line.

Karting Jackets

FSR Radiators

Racing gloves

Braces & Supports

Racing  Wheels




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