Here is a list of left rear shocks we build and combination of them like COB and Bypass and SRT. We will go over what each one means and list them in order of compression strength. Remember we can add more gas to a shock and it will help hold the car up more if needed.
Gas: Things to remember about gas are:
The higher the gas the better it holds the car up.
The higher the gas the harder it is on traction in the slick.
Left rear gas pressure must be high enough to control given compression.
When gas pressure is to low shock will leak.
Bypass Shock: This is a way to bypass oil in the last 2 inch of travel at full out. This allows car to make better traction in the rough when fully on bars.
SRT Piston: This is a piston used in the left rear to bypass oil when the car hits a bump on the track. It can also be used in the other 3 corners to improve tractions. This works very well
COB: Which stands for compression only bypass is a piston that has a check valve in it that separates the compression from the rebound which allows for very low rebounds on left rear, this allows car to jump on bars.
Base Valve: The best way to add drive to a 4 bar car on the left rear is to do a BV. This is shock in front of the birdcage and spring behind. You will lose your rod force from gas so you will need to manage the car on the LR with the gas pedal.
List of left rear shocks:
LR1-40-330 @ 150 PSI (2-6.5)
LR1-40-350 @ 150 PSI (2-7)
LR1-40-400 @ 200 PSI (2-8)
LR1-50-350 @ 150 PSI (2-7)
LR1-50-400 @ 200 PSI (2-8)
LR1-60-350 @ 175 PSI (2-7)
LR1-60-400 @ 225 PSI (2-8)
LR1-75-550 @ 250 PSI (2-10)
All of these shocks can be done in the following format:
I have listed these shocks in the order of strength they are notice that they have the same G-code 2-7 but a 40-350 is weaker than a 50-350 because of the low speed. Now when you go from a LR1-40-350 to a LR1-50-350 you're not going to go WOW what a difference, that is because it is not, we use one over the other for tuning. Left rears are more about the car and the driver and what they need this is why we have so many choice. Bigger is not always better, we can work on it to fit your needs.