BSB Mfg. Performance Driven
Shock Valving:
Before we talk about Valving option lets understand the 3 different bleed circuit that we use most often. The 3 option are as such: 4 bleed full, 4 bleed tiny, and 1 bleed tiny, this create different amounts of bleed which determines how fast the shock will allow the car to square up or get back to zero. We use these bleed systems in different shocks and under different times, but understanding how bleed changes your car and how much you need to change the bleed to get that effect is the trick.
Valving Option:
4 Bleed Full: This bleed shim is used in all 12 Series shocks that are called out as such, (2020) or we call this a number / number call out. Any number/number call out in any configuration will use a 4 bleed shim on both sides of the piston, this is true in both 36mm and 46mm shocks. What this means is that it will never have great low speed control over the car but allow the car to get across rough better, but lack in posture control in the slick.
4 Bleed Tiny: This bleed shim starts to reduce the amount of bleed that the shock see, slowing down how fast the car returns to zero. We use this shims in both the 36mm and 46mm shocks and in a shock the has specific low speed callouts such as a RF1-75/130. This type of valving is good to the cars posture while allow it to slowly return to zero. This allows for both front end grip and drive in the car at the same time.
1 Bleed Tiny: This bleed shim is used to reduce the bleed to the fullest but still allow the shock to work. No bleed shocks are on the market but can only be run under certain condition making them not the most desirable valve for a dirt car. This shim is use most in the RFGF family of shocks when we are need to hold the shock in that position longer to all the time. This is good when running a bump stop or when you need to maintain control of the car longer.
Number/Number
1010
1030
1040
1050
1060
1090
2020
2030
2040
2050
3030
3010
3020
3040
3050
3060
4040
4010
4020
4030
5050
5010
5020
5030
6060
6010
6020
6030
RF1-75/130
RF1-30/130
RF1-40/130
RF1-40/130
RF1-50/130
RF1-60/130
RF1-75/130
RF1-100/130
RF1-125/130
LF1-40/160
LF1-50/160
LF1-75/160
LF1-100/160
RRN/200
RR1-40/110
RR1-50/110
RR1-75/110
LR1-40-300
LR1-40-330
LR1-40-400
LR1-40-450
LR1-40-500
LR1-50-350
LR1-50-400
LR1-60-350
LR1-60-400
LR1-75-550
LF 140/160
RR 150/160
LR 125/225
LR 80/300
LR 125/300
​
RFGF-200/130
RFGF-200
RFGF-300
RFGF-400
RFGF-500
RFGF-600
RFGF-700
RFGR-800
RFGF2-300
RFGF2-400
RFGF2-500
RFGF2-600
RFGF2-700
RFGF2-800
In a 25 Series shock we do build just about any valving you need. We need low speed control and grip to make them go fast in the corners and not just a ton of rebound, but rebound that works. We can build any valving you like but suggest you get a package built for you or pick one from below.
