JConcepts B4.1, T4.1 And SC10 Front Axles For 12mm Hex Conversion

Nov 27, 2012 No Comments by

We first told you about these new front axles at the 2012 Electric Off-Road Super Nationals, and today JConcepts officially releases them to the general public. Check out all the info in the press release below:

One of the best upgrades you can make to the Team Associated line of vehicles is a conversion to 12mm hex wheels. JConcepts has been on top of this conversion since its introduction with hex adaptors and Mono wheels. A critical point of the conversion revolves around the front axle and surrounding geometry. Within the steering block the space is very tight and especially between the 2 front bearings where the front axles rests between the bearing bores in 1 plane and the king pin in the perpendicular plane.

The JConcepts front axle design is based around high-quality steel construction, an outer bearing crush step and an inner 4-40 locknut for security. The design eliminates c-clips, screws and other items which are hard to detect of issues which limit performance. The free spinning design includes axles, 4-40 mini lock-nuts, thin axle shims, decal and assembly instructions.

Assembly –

Assembly is built from the outside in. Slide on the outer wheel bearing from the outside of the axle and slide assembly through the (AE #9880) steering block. Insert the roll-pin from the outside and slide on the hex adaptor. Holding the assembly by the hex adaptor, slide on the inner bearing along with thin axle shims and secure the entire assembly with the 4-40 locknut. Check for the intended amount of free play and spin the axle to check entire assembly.


  • JConcepts design and function
  • High-quality steel construction
  • Design eliminates frustrating components
  • Includes mini 4-40 locknuts

B4.1 front axle for 12mm hex conversion
Part # – 2169
Retail price – $12.00
(Fits B4 line, requires #9880 AE steering block)

T4.1 front axle for 12mm hex conversion
Part # – 2170
Retail price – $12.00
(Fits T4 line, requires #9880 AE steering block)
(Requires JC #2081 12mm clamping hex adaptor)
(Requires JC 3354W, 3354Y 12mm hex wheels)

Video showing the related components for the T4 line of vehicles:

SC10 front axle for 12mm hex conversion
Part # – 2171
Retail price – $12.00
(Fits SC10 line, requires #9880 AE steering block)

Gallery > JConcepts B4.1, T4.1 And SC10 Front Axle For 12mm Hex Conversion


If you like this article, check out this additional article on JConcepts.

Featured News, Pro-Line, Product News, Team Associated

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Bringing you RC product news you can use on a daily basis as Car Action's Online News Editor. I have been heavily involved in RC since the late 90's, plus a diverse background that includes print and broadcast journalism, engineering, information technology, direct marketing, and even banking. Currently I enjoy racing 1/10 electric off-road, covering large race events, and spending time with my family when away from the track.
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