SPI FIX-IT-KIT PISTON KIT AND STRAIGHTLINE KIT

GoBigParts · Oct 18, 2015

Just wanted to let everyone know because I have not seen this before is we now have available the SPI Polaris CFI 800 Fix-it kits. What I like about this kit is the use of cast SPI T-moly coated pistons which are like what the oem uses except these have longer skirts with the spacer under cylinders. So expansion differences while warming up will not be as big of an issue as the forged pistons. I have used SPI's in the past on other Polaris and Ski-doo motors with no issues. Also like the price.

Also, we have added the Straightline Performance Fix-it kit to our site. This is a nice kit with an anodized spacer and Wiseco pistons with titanium coated rings, and longer skirts.

Both kits should be an improvement over stock with replacing pistons and increase case volume for an additional 2-3 HP addition.

You can order securely and safely here: http://www.gobigparts.com/FIX-IT-KITS-PISTONS.html

Please contact me with any questions.

UPDATE!!! I added the Hyperdrive pistons as a selection on the SPI fixit kit. Also, I added direct replacement SPI pistons to the link as well. So if you don't feel the need to do the spacer and longer pistons skirts but you just want to replace your pistons with an OEM style you can order those with a very cost effective T-moly or Hyperdrive kit.

I most admit any pro-ride with a 800CFI motor should get new pistons or at least check them by 2400 miles. This is just my experience.

http://www.gobigparts.com/FIX-IT-KITS-PISTONS.html

Sheetmetalfab · Oct 18, 2015

Fit it

Fit it kits are the best!!!

Lol.
That grammar police will get ya.

GoBigParts · Oct 19, 2015

Yeah, I noticed that after posting and don't see anyway you can edit the title. Anyone know of a way?

Sheetmetalfab · Oct 19, 2015

GoBigParts said:
Yeah, I noticed that after posting and don't see anyway you can edit the title. Anyone know of a way?

Buzzfeedhorse can do it.

GoBigParts · Oct 20, 2015

Thanks MH.

GoBigParts · Oct 29, 2015

Anyone use either of these. I'm not sure if it is a complete fix but if I had higher milage or saw the need to replace mine due to visual wear, now that mine is out of warranty, I would certainly give them a try for the price.

GoBigParts · Jan 27, 2016

SPI uses the tmoly cast pistons so should be at stock specifications and heat up like the stock ones.

bkpa · Feb 1, 2016

What is the part number of the SPI piston?

starrsleds · Feb 6, 2016

I can look tonight when I get home I just did an spi kit but they just use an 2010-2011 arctic cat 800 piston says so rite on the box

GoBigParts · Feb 6, 2016

SPI 54-9221PS

Fredrik · Feb 23, 2016

Do you have kit with spi hyperdrive piston.

GoBigParts · Mar 27, 2016

Fredrik said:
Do you have kit with spi hyperdrive piston.

Yes, I do, please contact us through PM or email. randy@gobigparts.com

GoBigParts · Oct 7, 2016

Great kits to and cost effective way to keep your proride in tip top shape.

GoBigParts · Oct 17, 2016

UPDATE!!! I added the Hyperdrive pistons as a selection on the SPI fixit kit. Also, I added direct replacement SPI pistons to the link as well. So if you don't feel the need to do the spacer and longer pistons skirts but you just want to replace your pistons with an OEM style you can order those with a very cost effective T-moly or Hyperdrive kit.

I most admit any pro-ride with a 800CFI motor should get new pistons or at least check them by 2400 miles. This is just my experience.

http://www.gobigparts.com/FIX-IT-KITS-PISTONS.html

luggnut · Oct 19, 2016

GoBigParts said:
Anyone use either of these. I'm not sure if it is a complete fix but if I had higher milage or saw the need to replace mine due to visual wear, now that mine is out of warranty, I would certainly give them a try for the price.

No experience with the fix it kits yet but installed the SPI oem style pistons in my fiends 2008 Dragon 800 RMK 6 years ago and 3,400 miles later it is still running great with no issues. We have been using SPI pistons since 2008 and have had great luck and no issues with them

GoBigParts · Nov 21, 2016

luggnut said:
No experience with the fix it kits yet but installed the SPI oem style pistons in my fiends 2008 Dragon 800 RMK 6 years ago and 3,400 miles later it is still running great with no issues. We have been using SPI pistons since 2008 and have had great luck and no issues with them

Never had an issue with their replacment pistons.

http://www.gobigparts.com/SPI-DIRECT-REPLACEMENT-PISTON-KIT-POLARIS-800CFI.html

http://www.gobigparts.com/FIX-IT-KITS-PISTONS.html

Thanks for the orders guys. Keep them coming.

GoBigParts · Dec 4, 2016

http://www.gobigparts.com/FIX-IT-KITS-PISTONS.html

GoBigParts · Jan 31, 2017

Just shipped out another SPI kit. Seem to be working well. Thanks for the orders.

GoBigParts · Aug 22, 2017

Hey we now have the same website and the links above still work. Now is the time to get the engines in tip top shape before it snows.

I want to make sure everyone understands these kits. SPI Pistons are an aftermarket alternative from the company Sport Parts Inc.
Straight-line Performance Inc kits are from a company in Minnesota owned by Jason Houle that does Performance parts for Polaris and Ski-doo. They both have the initials SPI. Thats not confusing at all. LOL.

SPI Fix-it Kits

SPI Fix-it Kits Shim

Straight-line Performance Fix-it Kit

SPI Direct Replacement Piston Kit OEM spec.

gtwitch · Aug 23, 2017

Randy, Do you have SPI hyperdrive pistons for direct replacement without using riser/spacer plate, in other words Stock height polaris replacement pistons??? If so, what is the SPI #
gtwitch in wyoming

SPI FIX-IT-KIT PISTON KIT AND STRAIGHTLINE KIT

Well-known member

Well-known member

Well-known member

Well-known member

Well-known member

Well-known member

Well-known member

Well-known member

Active member

Well-known member

Active member

Well-known member

Well-known member

Well-known member

Well-known member

Well-known member

Well-known member

Well-known member

Well-known member

Similar threads