Viper Seat Riser Redefined

By viper7mi

One of my summer projects was to build a seat riser.

My riser is a combination of seat riser and extra foam mod seat top for under $27 bucks.

Seat Riser Materials:

Dimension 2" in front and 3" in rear

2 pieces of 1/4 plywood - cut to underside of seat: $6

1 1/2 x 14 of trim wood for front of riser: $1.50 1" plastic pipe cut on angle to 2 1/2 for rear bolts:

.67c

3 - Cans of expand foam that hardens (red can): $15

2 - 55mm bolts 10.9: free

2 - 55mm coupler nuts: free

2 - 1/2 plastic washers: free

7 - Sticks of hot glue sticks: $2.00

Vinyl: free

Foam 1": $3.60

1" - Galvanized steel strap: $3.00

Closed cell dense foam: $ 4.50

1^st Step:

Cut the front wood support and the rear plastic supports measured to get the spec of 2" in the front and 3" in the rear edge. Drill a hole for the rear bolts. The plastic supports will go over the hole.

Cut extra wood supports: 3 pieces in the center and 4 pieces in the rear past the plastic supports. Screw the supports in the top and bottom. Hot glue all supports. Drill 1" holes: 8 across from front to back, top and bottom.

Spray foam the riser and let DRY for 24 hours. Keep and eye on the rise of the foam so the riser does not expand. Cut off excess foam and paint. Use 1" foam around the edge. On one side make a 1/2" edge that goes around the top edge to cover the gap. Then staple the vinyl over the foam.

Duck tape the staples.

The steel strap is measured to the riser and seat height tabs and fastened by using the gas tank bolts.

Cut the closed cell foam to fit around the edge of the tank to take up the gap between the seat and the tank.

Assemble the riser by using a plastic washer, existing seat nuts and coupler nuts to the seats old studs. Seat riser and seat and bolts with plastic washers.

Foam 1" added to the top of the Seat:

Bought a 1" thick x 14" x 20" to the top of the Viper seat. Use mesh sandpaper used for drywall sanding to sculpt the edge to a bevel 45 degree on the sides. Take the seats front staples out. I wrapped the foam in a slippery packing paper and put it in the seat. Positioned it to the exact spot and pulled out the paper. I used super sticky double sided tape in between the foam the full length in 3 strips.

Re-staple. Make sure you have room to add the foam to your seat.

The combination of the seat riser and foam gives the seat a close 3" in the front and 4" in the rear.

Overall, the seat fits great and gives the sled a more rider forward position for me.

The pictures show the seat completed, wood with the holes, and supports prior to foam. Bracket for the lip of the seat that fastens to the tank bolts.

Thanks to Bearit for original concept.

Totallyamaha is not responsible for any damages that these modifications may cause to your vehicle; any modifications are your responsibility if you choose to do so. We are providing information ONLY. Some of these modifications may VOID your warranty and that is your responsibility to look into. The Totallyamaha users have passed along most of the information found on this site. If you have any questions or concerns about anything on this site talk to your dealer before using any of the information. Totallyamaha will not be liable for any damages or personal injury from any modification performed from this site.