2003 KTM 300 Complete Engine Rebuild Assembly Order form:
This 2003 KTM 300 Engine Repair Kit is a must if one wants to rebuild a dirt bike engine with the help of some of the best in the industry. All that’s needed is to send pics of the torn-down engine so we can order the correct OEM parts and upgrades where we see fit to help with this process. We created this service to step in and support you as we’ve heard many stories of customers missing a small detail & in return, not fixing all the issues, only to rebuild a dirt bike motor again shortly after. Parts will take weeks, sometimes even months, to get, so please be aware of this when starting the process, as we cannot refund once submitted for this engine service.
Add the option above for Cases, cylinders, and cylinder heads.
Also, Complete New 2003 KTM 300 Engines are still available for special orders at prices that depend on the current market.
What’s included with this 2003 KTM 300 Motor Parts Rebuild?
Complete Clutch rebuild.
Complete Cylinder Rebuild.
Replacing worn Transmission products.
Crankshaft & Connecting Rod.
Piston.
- All Seals & Gaskets needed to Run.
Valves and worn top-end components.
- The cylinder, head, and Cases will be extra if those need replacement as well!
The product photo is for reference only.
- Complete 2003 KTM 300 Engines are Still Available upon request!
Compatibility/Fitment
This is a list of all the years we carry this part for, yet there may be a different part number from year to year. If your bike is listed, no worries; the product will fit your ride. If any mods are done to the bike, please let us know on the checkout page or in a message after purchase so we can send the correct product for your ride.
Brand | Model | Year |
---|---|---|
KTM | KTM 300 | 1998 |
KTM | KTM 300 | 1999 |
KTM | KTM 300 | 2000 |
KTM | KTM 300 | 2001 |
KTM | KTM 300 | 2002 |
KTM | KTM 300 | 2003 |
KTM | KTM 300 | 2004 |
KTM | KTM 300 | 2005 |
KTM | KTM 300 | 2006 |
KTM | KTM 300 | 2007 |
KTM | KTM 300 | 2008 |
KTM | KTM 300 | 2009 |
KTM | KTM 300 | 2010 |
KTM | KTM 300 | 2011 |
KTM | KTM 300 | 2012 |
KTM | KTM 300 | 2013 |
KTM | KTM 300 | 2014 |
KTM | KTM 300 | 2015 |
KTM | KTM 300 | 2016 |
KTM | KTM 300 | 2017 |
KTM | KTM 300 | 2018 |
KTM | KTM 300 | 2019 |
KTM | KTM 300 | 2020 |
KTM | KTM 300 | 2021 |
KTM | KTM 300 | 2022 |
KTM | KTM 300 | 2023 |
KTM | KTM 300 | 2024 |
KTM | KTM 300 | 2025 |
Jessy –
we’ve been looking for months to find a complete engine for my KTM. was wary of buying a $4000+ item online but with talking to Boston I trusted the process. After a summer of abuse in the Oregon dunes, I really can say this is the way to go. After having to spend 2k on a rebuild on my last motor that just had more issues down the road, I’m glad to have an easy option to as they say bolt and ride!