---
product_id: 10961993
title: "Rotax 503 Aircraft Engine Top End Piston Rebuild Kit Std Bore 72 Mm Coated"
brand: "aerolite"
price: "€ 1003.64"
currency: EUR
in_stock: false
reviews_count: 1
url: https://www.desertcart.sk/products/10961993-rotax-503-aircraft-engine-top-end-piston-rebuild-kit-std
store_origin: SK
region: Slovakia
---

# Teflon Moly + Ceramic Dome Coating 72mm Std Bore Precision Fit Complete Overhaul Gasket & Seal Kit Rotax 503 Aircraft Engine Top End Piston Rebuild Kit Std Bore 72 Mm Coated

**Brand:** aerolite
**Price:** € 1003.64
**Availability:** ❌ Out of Stock

## Summary

> 🚀 Elevate Your Rotax 503 – Rebuild Like a Pro, Fly Like a Boss!

## Quick Answers

- **What is this?** Rotax 503 Aircraft Engine Top End Piston Rebuild Kit Std Bore 72 Mm Coated by aerolite
- **How much does it cost?** € 1003.64 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/10961993-rotax-503-aircraft-engine-top-end-piston-rebuild-kit-std)

## Best For

- aerolite enthusiasts

## Why This Product

- Trusted aerolite brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Ready for Upgrade:** Oversize piston options available to future-proof your engine rebuild and maximize power output.
- • **OEM-Exceeding Quality:** Aftermarket pistons designed to surpass original manufacturer specs for enhanced strength and heat transfer.
- • **Comprehensive Overhaul Kit:** Includes pistons, dual rings, pins, circlips, and full gasket & crank seal set for a seamless top-end rebuild.
- • **Advanced Teflon Moly Coating:** Dual-layer ceramic anodized domes reduce friction and heat, delivering smoother runs and extended engine life.
- • **Precision 72mm Standard Bore:** Engineered for perfect fit on all late-style Rotax 503 UL engines, ensuring peak performance and reliability.

## Overview

The Rotax 503 Aircraft Engine Top End Piston Rebuild Kit features precision 72mm standard bore pistons with advanced Teflon moly and ceramic dome coatings. Designed for all late-style Rotax 503 UL engines, this comprehensive kit includes dual-ring pistons, pins, circlips, and a full overhaul gasket and seal set. Engineered to exceed OEM specifications, it ensures smoother operation, superior heat transfer, and durability, making it the ultimate upgrade for your aircraft engine rebuild.

## Description

This is a aftermarket top overhaul rebuild kit featuring 2 new pistons, oem style w/dual rings, pins, circlips , full major overhaul gasket w/ crank seals kit as shown. This set exceeds the MFGs specs , Designed to replace the oem elkos in all respects. These are moly coated w/ ceramic anodized crowns, see other listing for non coated pistons std type pistons Smoother running due to better balance, stonger and better heat transfer. This is set is for 72.00 std bore 503 rotax late style.

Review: Five Stars - Just what I needed at a great price.

## Features

- Std Bore 72mm
- Fits all late style Rotax 503 UL engines
- Full overhaul gasket n seal kit included
- Oversizes are available
- Teflon moly coated w/ceramic domes

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00M0N94QQ |
| Best Sellers Rank | #3,357,309 in Automotive ( See Top 100 in Automotive ) #2,268 in Powersports Engine Kits |
| Brand | Aerolite |
| Customer Reviews | 4.6 4.6 out of 5 stars (4) |
| Date First Available | July 22, 2014 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 4 pounds |
| Item model number | RTX503STD |
| Manufacturer | aerolite |
| Manufacturer Part Number | RTX503STD |
| Package Dimensions | 12 x 6 x 6 inches |

## Images

![Rotax 503 Aircraft Engine Top End Piston Rebuild Kit Std Bore 72 Mm Coated - Image 1](https://m.media-amazon.com/images/I/71OTVWzKIcL.jpg)

## Questions & Answers

**Q: will this fit my rotax 503 engine out of my 1999 skandic 500 wt? i dont think its an oversize piston. it has never been bored out.**
A: I would think that if you are for sure a stock 72mm bore, it should work just fine. I have an aircraft 503 and I don't think there is any difference in the pistons, rings and intake/ exhaust gaskets. This kit worked perfectly for mine.

**Q: Will this fit my 1995 skidoo Rotax 503?**
A: It's a bit of overkill for a snowmobile but it will fit

## Customer Reviews

### ⭐⭐⭐⭐⭐ Five Stars
*by Q***Q on October 21, 2014*

Just what I needed at a great price.

## Frequently Bought Together

- Rotax 503 Aircraft Engine Top End Piston Rebuild Kit Std Bore 72 Mm Coated
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- Permatex 81950 Ultra Slick Engine Assembly Lube, 4 oz. , Red

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**Shop now:** [https://www.desertcart.sk/products/10961993-rotax-503-aircraft-engine-top-end-piston-rebuild-kit-std](https://www.desertcart.sk/products/10961993-rotax-503-aircraft-engine-top-end-piston-rebuild-kit-std)

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-03-11*