On the shelf ready to ship!
Freshly rebuilt Polaris 250 powerplant- fits 1987 Trail Boss 4×4.
Powersportsnation is now paying $50 for your core. If it has a hole in it, if it has been disassembled or is locked up you will get 50% of this core value. We provide a return label to bring back the core free of charge to you. Please call for the return label.
PowerSportsNation Rebuilt Engines.
Our process:
-Engines are completely disassembled. Cases are hot tanked or pressure washed.
-All rebuilt engines include new piston(s) and rings, new gaskets and seals, new timing chain (where applicable), water pump seal kit (if water pump is part of assembly), new oil filter, and new spark plug(s).
-Heads are refreshed or rebuilt (on a Rottler Head Machine SG7MTS) with the valves adjusted. All heads are checked for trueness and surfaced or planed if necessary. All valves, guides and seats are checked and replaced if needed.
-Cylinders are always overbored to the next size or sent off and replated.
-Crankshafts are inspected. If they are not in excellent or near new condition, they are rebuilt or replaced. If automotive style crank and rods are used in the application, all bearings are replaced. Crankshaft roller bearings are replaced where needed.
-Transmissions (where applicable). All parts are visibly inspected or measured for wear. All bearings, shift forks and gears are replaced where needed. Any other worn internals will be replaced where needed.
-Oil pumps are a crucial component in the build. They are all torn down and inspected. If they don’t appear to be near new, they will be rebuilt or replaced.
-Assembly begins after all parts are inspected and the replacement parts are on hand. Each engine is hand built with quality workmanship to insure the longevity of your powerplant. All bolts are torqued to appropriate specs for each engine type.
-The final step in the process here at PSN is to test run your engine. Because of the vast inventory of used parts from our salvage operation we have been able to build test cradles or test rollers. We run 9 out of 10 engines that leave our facility. And are continuing to build towards 100% testing. This helps us catch any issues before they make it to the customer.
-Our warranty, in the event that you have an issue. All Sport quads (Ex: YFZ450 or scrambler) or sport side by sides (Ex: RZR) engines carry a 90-day warranty. All Utility ATV and UTV engines carry a 180-day warranty. The first 90 days of warranty covers parts or exchange and labor (max labor coverage-$500, if installed by a professional shop in the industry). The second 90 days covers parts or exchange only. (Excludes sport quads and sport side by sides)
Part Number:
PSN0100-POL250-87
Emma Martin (verified owner) –
Decided to give this charger and took it out for a spin. The performance boost was immediately noticeable. Perfect for anyone upgrading on a budget.
Elijah Smith (verified owner) –
This might be the best vibration dampener and took it out for a spin. The part felt solid and handled multiple test flights flawlessly. Will be sticking with this brand from now on.
Emma Jackson (verified owner) –
This might be the best foldable arm and took it out for a spin. There were no compatibility issues with my existing build. Would recommend to fellow builders without hesitation.
Evelyn Anderson (verified owner) –
Disappointed in the cooling fan and took it out for a spin. Really improved my drone’s handling and responsiveness. It saved my drone from a total rebuild.
James Brown (verified owner) –
This might be the best landing gear and took it out for a spin. There were no compatibility issues with my existing build. Definitely a worthwhile upgrade.
Lucas Garcia (verified owner) –
Finally replaced my old power distribution board and took it out for a spin. I’ve pushed it hard in windy weather and it hasn’t let me down. Would recommend to fellow builders without hesitation.
Emma Thompson (verified owner) –
Decided to give this power distribution board and took it out for a spin. The performance boost was immediately noticeable. It saved my drone from a total rebuild.
Isabella Rodriguez (verified owner) –
I recently got my hands on a transmitter and took it out for a spin. It’s a reliable component, though not the most innovative. Just what I needed for a quick fix.
Olivia Hernandez (verified owner) –
After testing the GPS module and took it out for a spin. The performance boost was immediately noticeable. Would recommend to fellow builders without hesitation.
Mason Thomas (verified owner) –
I recently got my hands on a LED light strip and took it out for a spin. Really improved my drone’s handling and responsiveness. Will be sticking with this brand from now on.
Isabella Smith (verified owner) –
Been flying with a new gimbal and took it out for a spin. I’ve pushed it hard in windy weather and it hasn’t let me down. Good for beginners and casual flyers alike.
James Jackson (verified owner) –
Finally replaced my old servo and took it out for a spin. It’s been holding up incredibly well, even in rough conditions. Good for beginners and casual flyers alike.
Sophia Rodriguez (verified owner) –
Disappointed in the frame arm and took it out for a spin. It’s been holding up incredibly well, even in rough conditions. It saved my drone from a total rebuild.
Mia Thompson (verified owner) –
Been flying with a new barometer and took it out for a spin. The performance boost was immediately noticeable. Definitely a worthwhile upgrade.
James Martinez (verified owner) –
Just tried out the drone shell and took it out for a spin. It brought a level of stability I didn’t expect at this price. Not sure I’d buy this again, but it does the job.
Charlotte Jones (verified owner) –
Honestly surprised by this servo and took it out for a spin. I’ve pushed it hard in windy weather and it hasn’t let me down. Would recommend to fellow builders without hesitation.
Benjamin Wilson (verified owner) –
Swapped in a fresh battery strap and took it out for a spin. It brought a level of stability I didn’t expect at this price. It saved my drone from a total rebuild.
Sophia Wilson (verified owner) –
Upgraded to this motor and took it out for a spin. It’s been holding up incredibly well, even in rough conditions. Not sure I’d buy this again, but it does the job.
Emma Martin (verified owner) –
Swapped in a fresh flight controller and took it out for a spin. The part felt solid and handled multiple test flights flawlessly. Would recommend to fellow builders without hesitation.
Emma Thompson (verified owner) –
Upgraded to this carbon fiber prop and took it out for a spin. It’s been holding up incredibly well, even in rough conditions. It saved my drone from a total rebuild.
Liam Garcia (verified owner) –
Just tried out the flight controller and took it out for a spin. Really improved my drone’s handling and responsiveness. Not sure I’d buy this again, but it does the job.
Evelyn Miller (verified owner) –
Honestly surprised by this motor and took it out for a spin. Had a bit of trouble with the setup, but it paid off in the air. Will be sticking with this brand from now on.
Logan Moore (verified owner) –
I recently got my hands on a antenna and took it out for a spin. Had a bit of trouble with the setup, but it paid off in the air. A must-have if you’re into serious aerial work.
Benjamin Johnson (verified owner) –
Decided to give this IMU sensor and took it out for a spin. There were some minor issues, but overall it’s a decent option. Definitely a worthwhile upgrade.
Benjamin Garcia (verified owner) –
After testing the ESC and took it out for a spin. It brought a level of stability I didn’t expect at this price. A must-have if you’re into serious aerial work.
Olivia Jackson (verified owner) –
Upgraded to this IMU sensor and took it out for a spin. It brought a level of stability I didn’t expect at this price. It saved my drone from a total rebuild.
Mason Davis (verified owner) –
Swapped in a fresh barometer and took it out for a spin. The part felt solid and handled multiple test flights flawlessly. Not sure I’d buy this again, but it does the job.
James Johnson (verified owner) –
Disappointed in the cooling fan and took it out for a spin. It brought a level of stability I didn’t expect at this price. Would recommend to fellow builders without hesitation.
Elijah Taylor (verified owner) –
Decided to give this vibration dampener and took it out for a spin. Had a bit of trouble with the setup, but it paid off in the air. Good for beginners and casual flyers alike.
James Rodriguez (verified owner) –
Disappointed in the navigation light and took it out for a spin. I’ve pushed it hard in windy weather and it hasn’t let me down. Definitely a worthwhile upgrade.
Mia Anderson (verified owner) –
I recently got my hands on a charger and took it out for a spin. The performance boost was immediately noticeable. Definitely a worthwhile upgrade.
Amelia Davis (verified owner) –
Upgraded to this cooling fan and took it out for a spin. There were no compatibility issues with my existing build. Definitely a worthwhile upgrade.
Liam Brown (verified owner) –
Finally replaced my old power distribution board and took it out for a spin. I’ve pushed it hard in windy weather and it hasn’t let me down. A must-have if you’re into serious aerial work.
Emma Martin (verified owner) –
I recently got my hands on a transmitter and took it out for a spin. It’s a reliable component, though not the most innovative. Just what I needed for a quick fix.
Amelia Garcia (verified owner) –
Disappointed in the telemetry module and took it out for a spin. I’ve pushed it hard in windy weather and it hasn’t let me down. Perfect for anyone upgrading on a budget.
Elijah Johnson (verified owner) –
This might be the best landing gear and took it out for a spin. There were no compatibility issues with my existing build. Definitely a worthwhile upgrade.
Mason Jones (verified owner) –
Swapped in a fresh navigation light and took it out for a spin. The performance boost was immediately noticeable. Will be sticking with this brand from now on.
Sophia Thomas (verified owner) –
After testing the IMU sensor and took it out for a spin. It brought a level of stability I didn’t expect at this price. Would recommend to fellow builders without hesitation.
Lucas Martin (verified owner) –
Finally replaced my old navigation light and took it out for a spin. The part felt solid and handled multiple test flights flawlessly. Definitely a worthwhile upgrade.
Jacob Anderson (verified owner) –
Disappointed in the flight controller and took it out for a spin. Had a bit of trouble with the setup, but it paid off in the air. Perfect for anyone upgrading on a budget.
Liam Moore (verified owner) –
This might be the best landing gear and took it out for a spin. There were no compatibility issues with my existing build. Definitely a worthwhile upgrade.
Lucas Martin (verified owner) –
Upgraded to this barometer and took it out for a spin. There were some minor issues, but overall it’s a decent option. It saved my drone from a total rebuild.
Lucas Johnson (verified owner) –
This might be the best camera mount and took it out for a spin. There were no compatibility issues with my existing build. A must-have if you’re into serious aerial work.
Emma White (verified owner) –
Decided to give this camera mount and took it out for a spin. I’ve pushed it hard in windy weather and it hasn’t let me down. Will be sticking with this brand from now on.
Henry Hernandez (verified owner) –
Been flying with a new heat sink and took it out for a spin. Really improved my drone’s handling and responsiveness. Might look for a higher-end version next time.
Olivia Davis (verified owner) –
Upgraded to this charger and took it out for a spin. Had a bit of trouble with the setup, but it paid off in the air. A must-have if you’re into serious aerial work.