AE B4.2

JConcepts Anti-Roll Bar Set

roll bar rear

Over the last 3 years……a close racing buddy and I have talked about adapting a sway to our cars countless times. Every single time he’d chime in with, “Yah man we used to run front AND rear sway bars on our XXX’s and it was dialed.” In theory with the right track layout and condition, sway bars would greatly enhance the ability to carry speed through long sweeping high speed corners. Ultimately, this can take a few tenths off your lap time.

So why aren’t we running them now since we used to run them about 10 years ago?

I don’t know the answer to this one, but I suspect because of the “TREND” that flows within the RC industry and community. In other words….because the fast guys aren’t running them. Yep, it’s as simple as that. Had Maifield or Cav ran a rear sway bar on their car and won the 2013 Cactus Classic or the World’s warm up with it…..Everyone would have bought it, tried it, and some would adapt it and some would not since it is quite a dramatic change in driving style.

What is the trend now? Of course………MID MOTOR!!! Ever since Hara ran the RB6 in mid motor at the Reedy, it opened a lot of eyes to what the possibilities were. Companies like TLR and Kyosho designed their platform with the ability to convert from rear to mid motor so that they could sell their cars in Europe as well as in the United States. Basically it was smart for them because they could sell 1 car that could slay the world. However, since the newer gen cars are able to do both, the U.S. guys were able to try mid motor free of charge…meaning we didn’t have to buy a $200 conversion kit to try MM. Unexpectedly (perhaps?), the trend has started to gravitate towards mid motor cars and also mid motor race track conditions.

Oh yeah this article is about JConcept’s anti-roll bar set LOL. So here steps in a World Class company that offers what I believe is the only good solution to battle mid motor cars on high grip surfaces without running a mid motor car yourself. If you look at all the benefits to running mid motor (higher corner speed, less roll over chance in high speed sweepers, easier to drive on ultra high grip, etc) you get all that with a rear sway bar but maintain the drive-ability of a rear motor car. It will jump like a rm car, it will kick out like a rm car, and most importantly it will feel like you’re driving a rear motor car as opposed to driving a mm car. In the end, you are driving the same car, but with less roll! Try it out and see if it’s for you!

roll bar set

This is pulled directly from JConcepts website as I wanted to make this an all inclusive product/info learning center. Below is not my work and if you’d like to see the original please visit their fantastic website for other product info and news. Also follow JConcepts blog as it is filled with great info and stories!

JConcepts – SC10, T4 (F&R) and B4 (rear) anti-roll bar kit
Part # – 2166 (fits SC10 and T4 direct – B4 rear)
(Also fits SC10.2 and T4.2)

SC10, T4 anti-roll bar instructional video

SC10.2 and T4.2 gull-wing front arm anti-roll bar instructional video

Control is everything and especially in truck racing where the center of gravity is high and the trucks are narrow in width.    Having a stable and race-able platform is the key to success and JConcepts has made that easier for racers with a Team Associated SC10, T4 or B4 vehicle.      The JConcepts anti-roll-bar kit is the result of continuous driving on indoor, technical driving circuits which require the correct vehicle balance.

JConcepts, together with test drivers Brian Kinwald and Paul Wynn, sought out the proper pivot placement on the front and rear a-arms which provided the best performance point, which became the basis for the new design.   The inner mounted locations place more emphasis on wire diameter and less mechanical advantage which allows the driver a more finely tuned piece.

The front inner placement position (SC10 and T4) is located by a carbon fiber bracket which neatly attaches to the front arm and shock assembly with included hardware.   A mask template is provided to locate, mark and drill the rear inner placement position giving the advantageous position.   From there, racers can choose from the 3 different roll-bar wire diameters for the front and rear in 1.2, 1.4 or 1.6mm diameters.    Suspension arm to roll-bar connections are supplied by exclusive JConcepts molded open and closed ball-cups for proper length, positioning and ease of use.

The roll-bars are secured to the vehicle with a rotating “quad” bar mount which provides the hold for the pivoting action.   Quad mounts can be rotated for different wire diameters which makes adjustments and changes extremely quick and simple.   Drop-on the aluminum washers for the flat head screw installation and install the aluminum wire pivots and the anti-roll bar kit looks like a piece of fine craftsmanship ready for high-end racing.

JConcepts Anti-roll bar fits SC10.2 and T4.2 –

The JConcepts anti-roll bar kit can also be used on the SC10.2 and T4.2 generation gull-wing front suspension by using included components assembled in a different configuration.   Follow the complete installation instructions and video showing tips, tricks and a detailed description on how to mount the anti-roll bar kit on vehicles such as the SC10, T4, B4 (rear), SC10.2 and T4.2.

Anti-roll bars explained –

Anti-roll bars control left to right chassis roll which play a significant part in the handling and suspension activity on any vehicle.   On a medium or high traction surface, anti-roll bars restrict the excessive upward arm movement which stabilizes the vehicle and reduces excess chassis roll.   Having the ability to control the pressure on the outside and inside tire gives the driver another tuning option to assist in making the vehicle easy to drive providing even more comfort at high-speed.  Chassis roll creates uneven traction on the inside and outside tires.   A huge amount of force is placed on the outside tires, thus removing force on the inside tires.   Excessive chassis roll unbalances the vehicle creating a vehicle that feels edgy; top heavy or hard to drive during hard cornering.   The immediate answer in these conditions is the addition of an anti-roll bar.

When should you add an anti-roll bar kit to your vehicle?

You should consider getting an anti-roll bar kit if you run on a smooth surface with high-traction.   A sweeping turn or turns which load the outside of the vehicle heavily, causing an unsettled feeling or a feeling of a traction roll.

Anti-roll bars on bumpy tracks don’t allow your suspension to work independently, and make your vehicle difficult to drive so it’s necessary to assess the track conditions prior to setting the roll-bar diameter or overall importance.

Anti-roll bar kit includes:

• Carbon Fiber L&R front location brackets x 2
• Aluminum and blue anodized quad bar mounts x 4
• Front anti-roll bar wire – 1.2mm, 1.4mm and 1.6mm thickness
• Rear anti-roll bar wire – 1.2mm, 1.4mm and 1.6mm thickness
• Aluminum, blue anodized anti-roll bar wire pivots x 4
• Aluminum, blue anodized flat head screw washers x 4
• Anti-roll bar ball-cup x 4
• Anti-roll bar eyelet x 4
• 4-40 x .200” ball-ends x 4
• 4-40 mini lock-nuts x 2
• 4-40 x 5/16” button head screws x 2
• 4-40 x 5/8” socket head screws x 2
• 4-40 x 3/4″ flat head screws x 2
• 5-40 x 3/4″ flat head screws x 2
• 4-40 x 1/8” set screws x 4
• 4-40 x 5/8” set screws (rear) x 2
• 4-40 x 3/4″ set screws (front) x 2
• 3x7mm fiber washers x 4


• Carbon Fiber L&R front location brackets
• 3 different wire diameters front and rear.  Black oxide coated, laser etched
• Quad roll-bar mounts, aluminum and blue anodized
• Aluminum countersunk washers for security
• Aluminum, blue anodized anti-roll bar wire pivots
• JConcepts exclusive molded ball-cups and open eyelets for pivoting connection
• Installation and starting setup sheet


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