There are a few adjustments that the TC4 lacks over some of the newer cars.
- Height adjustment of diffs.
This is more of an issue with shaft drive cars, since you really can't raise or lower the diff cases. Most newer belt drive cars allow you to run the diffs higher or lower, which changes handling.
- Adjustable width using a-arm/hinge pin mounts
Some newer cars allow you to mount the a-arms closer or farther away from the center line of the chassis. On older cars without this adjustment you can use different width hex adapters to achieve a similar result. Here are examples made by Losi (http://www.losi.com/Products/Feature...rodId=LOSA9686
Most of the adjustments found on newer cars are also available on the TC4. If you are running the FT TC4, you also have the ability to use different thickness graphite chassis and upper decks to fine tune the handling.