Pinion Couplers

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Image Part Number Description Price Unit
C42-353-B C42-353-B
STILETTO SPLINED COUPLER 5/8-36 SPLINE, 3/4" BORE
Spline is correctly sized to fit the Stiletto 5/8-36 spline pinion

5/8-36 female spline
3/4 in. bored inside diameter
Machined from 4130 N Chromoly

Made in the USA
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$27.99 Each
C42-354 C42-354
STILETTO SPLIT BOLT COUPLER 9/16-26 SPLINE, 3/4" BORE
Spline is correctly sized to fit the Stiletto Pro-box, C42-348 & Pinto OEM style rack

9/16-26 female spline
3/4 in. bored inside diameter
Machined from 1018 mild steel

Made in the USA
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$43.99 Each
C42-355-B C42-355-B
STILETTO SPLIT BOLT COUPLER 5/8-36 SPLINE, 3/4" BORE
Spline is correctly sized to fit the Stiletto 5/8-36 spline pinion

5/8-36 female spline
3/4 in. bored inside diameter
Machined from 1018 mild steel

Made in the USA
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$43.99 Each
C42-403 C42-403
DUAL LOCK SPLINED COUPLER 9/16-26 SPLINE, 3/4" BORE
Spline is correctly sized for Stiletto Pro-box, C42-348 & Pinto style rack. Screws are at 90 deg. for positive dual lock.

9/16-26 female spline
3/4 in. bored inside diameter
Machined from 4130N Chromoly

Made in the USA
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$33.99 Each
C42-403-A C42-403-A
DUAL LOCK SPLINED COUPLER 5/8-36 SPLINE, 5/8" BORE
Spline is correctly sized to fit the Stiletto 5/8-36 spline pinion

5/8-36 female spline
5/8 in. bored inside diameter
Machined from 4130 N Chromoly

Made in the USA
See Product Details »
$33.99 Each
C42-403-B C42-403-B
DUAL LOCK SPLINED COUPLER 5/8-36 SPLINE, 3/4" BORE
Spline is correctly sized to fit the Stiletto 5/8-36 spline pinion

5/8-36 female spline
3/4 in. bored inside diameter
Machined from 4130 N Chromoly

Made in the USA
See Product Details »
$33.99 Each


Weld-on Splined Couplers


We offer several types of weldable splined couplers to achieve a proper and secure connection between a steering shaft or drive unit and the steering box when a U-joint is not desired.

Split-Bolt coupler:  Provides positive clamping on the splines, plus the added security of the bolt passing thru the retaining groove of the pinion. When space or weight savings is a primary concern, the Dual-Lock coupler or Straight coupler are other options to consider.

Dual-Lock coupler:
This coupler has two set screws with locking nuts, positioned 90 degrees from each other. The dual-lock design draws up the connection, eliminating the potential of undesirable lost motion with normal spline clearance; locking screws are positioned to locate in the machined retaining groove of the pinion.

Straight coupler: This coupler has no built-in retention provision; the installer will need incorporate a security method of locking the coupler to the male pinion for the specific application.  

The splines in these couplers are precision broached to the correct size - we guarantee they will fit their intended purpose.

Proudly Made in the USA.
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