Tag: spline

Dear Welder Series… Splined sway bars vs Pinned

Dear Welder Series…

Good morning. I’m just curious as to the purpose of the one splines end option on the sway bar kits vs. the pinned both ends option. What would the benefit be from the splined end or having both ends splined vs. Pinned. Thank you! Dear Kevin…
Good morning, Kevin.

At one time (mid 90’s) our sway bars were made in 2” length increments with 1” of spline on each end. This required a lot of inventory (we had bars from 18” – 36”) and we always ran out of something before we needed a large, cost effective quantity to run replacement stock. I think splining one end, making the bars in just 2 lengths (3/4” bars at 36” and 45”), and pinning the second end was a collaboration idea with one of our pro builder customers who used a lot of odd length bars and had to cut off one splined end anyway (… that had been paid for). Recently, the cost to spline the one end increased dramatically and we were not able to find a suitable alternate splining shop. The pinned ends have never given any problem that we are aware of so the decision was made offer both ends pinned until the one-end splined bars are gone.

The splined end allows the arm to be removed more easily than the pinned end. It also allows the arm to be “clocked” on the bar, but only in 10 degree increments. (The 3/4” bars have 36 splines.)

When the sleeves get pinned to the bar before the arms are attached, the arms can be tacked so they are aligned and the pins can be positioned to be most easily removed. Then the sleeves can be removed and the arms can be finish welded.

The pinned kits cost less than the splined kits.

I hope this answers your (very thoughtful) questions.

Thanks for looking at Welder Series’ parts.
Paul Horton