Where are the XTRA-10 skid mounting holes located vertically in the tunnel?

Both the front and rear mounting holes are 5 1/4 inches (133 mm) down from the top of the tunnel.

How far is the front XTRA-10 mounting hole from the drive shaft?

The front mounting hole is 11 5/8 inches (296 mm) from the flat of the drive shaft.

What sled were these XTRA-10 mounting dimensions measured from?

The dimensions were measured from a 1997 Ultra SPX SE, from the flat of the drive shaft to the center of the mounting holes.

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Polaris XTRA-10 Skid Mounting Diagram - Tunnel Hole Dimensions ('97 Ultra SPX SE)

Dimensioned XTRA-10 skid mounting drawing with measurements in inches and mm

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Dimensioned mounting drawing for an XTRA-10 skid showing hole locations measured from the driveshaft in inches and millimeters.

AI caption March 2011 · Photo 8 of 28

This document is a dimensional blueprint/diagram showing the mounting hole locations for installing an XTRA-10 rear suspension skid frame in a snowmobile tunnel. The drawing depicts a side profile of the tunnel with FRONT and REAR labeled, the drive shaft (shown with a hex center and concentric circles) at the front, and two suspension mounting hole positions. Key measurements: both the front and rear mounting holes are located 5 1/4 inches (133 mm) down from the top of the tunnel; the front mounting hole is 11 5/8 inches (296 mm) rearward from the flat of the drive shaft; and the rear mounting hole is 23 1/16 inches (585 mm) behind the front hole. A note states these dimensions were taken from the flat of the drive shaft to the center of the mounting holes, as measured from a 1997 Ultra SPX SE. The document is watermarked "From www.jbshocks.com — Shock Rebuilding Specialists." This diagram is useful for anyone retrofitting or transplanting an XTRA-10 skid into another sled's tunnel, providing the exact drill/mount locations needed to duplicate factory geometry.

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Frequently asked questions

Where are the XTRA-10 skid mounting holes located vertically in the tunnel?: Both the front and rear mounting holes are 5 1/4 inches (133 mm) down from the top of the tunnel.
How far is the front XTRA-10 mounting hole from the drive shaft?: The front mounting hole is 11 5/8 inches (296 mm) from the flat of the drive shaft.
What is the distance between the front and rear XTRA-10 mounting holes?: The rear mounting hole is 23 1/16 inches (585 mm) behind the front mounting hole.
What sled were these XTRA-10 mounting dimensions measured from?: The dimensions were measured from a 1997 Ultra SPX SE, from the flat of the drive shaft to the center of the mounting holes.
Who published this XTRA-10 skid mounting diagram?: It is watermarked 'From www.jbshocks.com — Shock Rebuilding Specialists.'

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