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JConcepts New Product Release – B4.1, T4.1 and SC10 Front Axle

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.

Video showing the related components for the T4 line of vehicles

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 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
UPC Code – 845937008367
Retail price – $12.00
(Fits B4 line, requires #9880 AE steering block)

T4.1 front axle for 12mm hex conversion
Part # – 2170
UPC Code – 845937008374
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)

SC10 front axle for 12mm hex conversion
Part # – 2171
UPC Code – 845937008381
Retail price – $12.00
(Fits SC10 line, requires #9880 AE steering block)

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