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The Hottest New Products from HPX 2026
If HPX 2026 proved anything, it’s that the performance aftermarket isn’t slowing down—it’s accelerating. Held in Charlotte, North Carolina, the High Performance Expo has quickly established itself as one of the industry’s premier gathering places for manufacturers, builders, racers, retailers, and enthusiasts looking to see what’s next in automotive performance. More than just a trade show, HPX serves as a launchpad for new technology, product debuts, and the ideas shaping the future of the aftermarket.

12-BOLT ALTERNATIVE
Back in the ’80s (40-some years ago, if you can believe it has been that long already), it was fairly easy to find a 12-bolt rearend for under your muscle car. The strength and presence can’t be denied, but finding one today is so much more difficult and expensive that most people don’t even bother looking anymore. This is part of the reason why so many 9-inch Ford rearends have been put under so many GM cars.

IN ARM’S WAY
Maximum’s design replaces the upper control arms with a torque arm and a Panhard rod, each of which has only one job rather than two. The Panhard rod centers the axle from side to side, and the torque arm controls pinion angle. Assigning each of these duties to separate components allows each piece to be better at its one job than the stock upper control arms are at either job. The torque arm is essentially a three-link design, and Maximum claims that it improves traction so much that after installation you may have to alter your sway bars to prevent understeer.
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Toyota RF1A Level Up
Unleashing the Full Potential of Your Toyota RF1A Transfer Case
Author
Harry Wagner
Words & Photography
Introduction to the RF1A Toyota Transfer Case
The gear driven RF1A Toyota transfer case found in 1979-1995 4 cylinder pickups and 4Runners fits the needs of many wheelers. It offers a strong, lightweight package with growing aftermarket support. These transfer cases have been used in numerous pickups, 4Runners, buggies, and even Jeeps! Everything from dual transfer case adapters, low range gear sets, twin sticks, and low profile crossmembers are available for Toyota transfer cases from a bevy of aftermarket sources. The RF1A is lighter and less expensive than a Dana 300, though they are not as easy to “clock” and do not allow front wheel drive operation.
Introduction of Trail Tamer Gears
When Advance Adapters released their “Trail Tamer” gears in a 5:1 ratio, we could not wait to get our hands on a set. 4:1 and 4.7:1 gears have been available from Advance Adapters for quite some time, but the 5:1 gears are new to the market and are the lowest ratio available for the Toyota transfer case at this time. The 5:1 gears offer a low range that is 120% lower than the stock 2.28 gearing. For those requiring the ultimate in strength and versatility, Advance Adapters also recently released a 5:1 version of their famous Atlas II transfer case.
Installation of Trail Tamer Gears
While these gears can easily be installed in an afternoon by a competent home mechanic with common tools, we chose to have authorized Advance Adapters dealer Inchworm Rock Walkin’ Gear install our gears. Inchworm’s chief mechanic Clint Borel installs gears in Toyota transfer cases on a daily basis and offered a lot of tips to make the job easier for those performing the work at home. The following is intended to supplement the detailed instructions provided by Advance Adapters.
Performance and Benefits of Trail Tamer Gears
When in high range the Trail Tamer gears run quiet and cool, just like stock. However once the transfer case lever is shifted into low range the difference from stock is instantly recognizable. The largest obstacles can be overcome at idle, instead of relying on momentum as necessary in the past. For those requiring even lower gear reduction, an Advance Adapters or Inchworm dual transfer case adapter can be used to mate two RF1A transfer cases together. The beauty of these new 5:1 Trail Tamer gears, however, is that they do not require any crossmember, driveshaft, or floor modifications in order to gain more control on the trail, making them very cost effective.
ARTICLE SOURCES
Advance Adapters Inc.
4320 Aerotech Center Way
Paso Robles, California 93446
805-238-7000
Inchworm Rock Walkin’ Gear
421 N. Buchanan Circle, #14
Pacheco, CA 94553
925-766-6555









