So what are we talking about here with Teraflex SpeedBumps? What are they, what's the advantage? Their purpose is to reduce suspension compression impact. In simpler terms, they act to keep your axle from slamming into the frame during big impacts, thus reducing the chance of bending or damaging the axle housing tube. They act like a shock absorber, working in a progressive manner to absorb large impacts, slowing the axle down during the compression stroke.
Features & Benefits
- Jk/Jku specific tuned for high-speed performance
- Absorbs large impact energy progressively during compression to prevent bent axle tubes
- Quiet movement and function (no pad slap)
- Maintenance free, all composite construction
- Resistant to all types of environmental conditions
- Subzero temperature flexibility reduces fatigue
- Compatible with all suspension systems that retain factory axle spring mounting locations
- Lifetime guarantee
Here's a walk through the install on Rubi. This install requires removing the factory bump stop bell with no welding required. This was my previous set-up. You can clearly see the factory bump stop.
Let's get everything out of way...
Next it's time to modify the bump stop housing to accept the SpeedBumps...
My lower bump stop pads had a corroded bolt we ended up cutting off. With the new set-up, I will be adjusting how many pads I will run. Teraflex gives a recommendation based on lift height, wheel size as a starting point.
Here is the finished install...
Here's a look at the SpeedBumps in action...
I spoke with Mark TeraFlex regarding proper setup of their SpeedBumps. I asked him this specific question: When setting up the SpeedBumps, what is the ideal distance between the SpeedBump and the strike pad?” Here’s his reply: “There is not an ideal distance between the SpeedBump and the strike plate. This just depends on how much travel you want the shock to have before it is assisted by the SpeedBump. The taller lifts are going to have more travel. In my opinion, I think at least 1 inch of space is nice to have to give the shock room to work. Anything much less than that and it can start to firm up the ride as the SpeedBumps are engaging so quickly. The most important thing to keep in mind when setting up the SpeedBumps is that the SpeedBumps stop the travel of the suspension about a 1/4”-1/2” before the shock bottoms out or anything else comes into contact such as a tire and fender”. So, pay particular attention to Marks’ last sentence and use that as your guide for setting them up correctly.
What I really like about these is knowing if I'm surprised by a really big suspension bottoming bump, I have the SpeedBumps to take the hit and protect the axle. These have run completely silent, both on and off road. Another great TeraFlex product!