Our best choice for aggressively high speed and bottom end performance from stock motors is our 20% silver serrated lay-down brush. It continues to set several new track records and win races and comes installed on all our stock motors. The brush compound is a unique blend of hard copper, silver metal and treated lubricant. I think you will find that it is very easy on the comm. for a high performance brush. If you take the time to break them in for a few minutes at 2 or 3 volts you will totally avoid the usual arcing and damage to the comm. We break in our brushes at least 10 minutes at low voltage to allow the brushes to seat without arcing and we impregnate the bushings with our special blend of synthetic oil for maximum motor life. Then they are checked on the dyno for bottom end, midrange and top end amp draw. After that, there ready for the track.

The most common configuration is a full brush, which is uncut. This brush produces the most power transfer and highest amps draw of all the brushes. It provides maximum contact area so that power transfer is maximized. They perform the best using purple (extra heavy) springs. If you have good quality, conditioned batteries you will be able to extract maximum amp draw for an aggressively fast run.

The next brush configuration we produce is commonly called the Pro-flow. It has a small hole drilled all the way through the brush that allows cooling at the brush face. This is a great feature when you want to over gear a motor for higher speeds or use them in trucks.

The Hollow drilled brush is very popular in the Yokomo based motors like our Black Tornado, (i.e. Reedy Rage or GM Pinnacle). It limits the amount of amp draw so the motors run cooler and the reduced brush face provide less friction for extremely high rpm. When using this configuration the motors act more like a modified, so gear them down a little to allow them to develop peak rpm.

The V-Slot or vertical slot brush is probably the most user friendly. You can put this brush into any motor and see a performance increase. The vertical slot allows the brushes to center on the comm. for perfect contact especially in the older motors that don't have brush dampers. It is a favorite in off-road racing where there is a lot of vibration from rougher track conditions. The brush stays centered and is cooled by the slot. Great when under heavy loads when the track is wet or damp.

The D-Deck or horizontal slot is popular in 1/12^th-scale cars. These cars typically run at reduced voltage, four cells. To get high rpm from low voltage the brush is cut horizontally to reduce brush contact area and allow the brush to stay cool so the tips can deliver maximum amp flow. This brush configuration is best when using light gold springs. Too much pressure will reduce rpm and cause excessive comm. wear. A popular brush combination is to run a V-Slot on the positive and the D-Deck on the negative. This will reduce comm. wear and provide maximum rpm and cooling.

Twenty percent silver - The 20% silver brush is for the professional racer who demands the maximum performance from his equipment. We have them available in the upright configuration as well for the pink NORRCA 36-degree stock and high turn (15 to 20 turn) modified motors. These are very popular in electric boats and touring cars.

Fifteen percent silver - We also offer a 15% silver brush in the same configurations as the 20%, for applications that require less amp draw and longer brush life. They work well in modified from 13 to 15 turn modified and stock motors.

Five percent silver - Our best modified motor brush for low maintenance and longevity is our 5% silver brush. This brush lasts and lasts and is very gentle on the comm. It has a very high lubrication content that will withstand extreme rpms and heat. It also draws less amperage compared to the 20% brush. Generally high silver brushes will disintegrate in one run, but these will hold up for several runs and provide exceptional horsepower. They work very well on 9 to 15 turn modified motors. They are also available in lay-down and cut configurations to suit your racing needs.

Premium grade copper - We also have a very good high quality cooper brush for little to no motor maintenance and extra long life. They are generally used for stock motors however, they also work very well in low turn modified motors. They are capable of extremely high current flow, yet contain enough lubrication to be gentle on the comm.