Description
TSP Top End Rebuild Kit – 300cc Carb & TPI Models
This TSP Top End Rebuild Kit will fit KTM, Husky and Gas Gas 300cc TPI models from 2018-on. (It will not fit TBI models) This is a complete top end rebuild kit that comes with everything you need to rebuild the top of of your 300cc TPI two stroke.
The TSP Top End Rebuild Kit includes:
- Meteor piston kit with your choice of an A, B or C piston size. Piston kit includes rings, pin, circlips and a high quality cast piston. These pistons are made by Meteor in Italy and are THE BEST available. The current Meteor piston features a special coating on the crown to reduce temps of the incoming charge and reduce detonation. This is a cutting edge piston developed especially for KTM.
- Top end gasket kit. Includes two gaskets to achieve the stock 0.60mm thickness base gasket, power valve cover gaskets, copper washers and O-rings. All O-rings are the correct size and made from the correct material, unlike the cheaper aftermarket kits.
- TSP little end bearing
- EZ clips free of charge ($20 value) for ease of piston installation
TSP rebuild kits are put together by TSP using parts sourced direct from OEM manufacturers in Japan and Europe. The parts we select are THE BEST available for each make/model and many are the exact same parts as the genuine items.
Piston Sizing: ideally you should measure your bore with a dial gauge to work out the correct piston sizing. If you cannot do this then a general rule of thumb is to install an “A” piston on any new cylinder or a cylinder that was just replated. Install a “B” piston on the first top end rebuild between 80 – 90 hours. Install the “C” piston on the second top end rebuild at 150+ hours. The 300 C piston kit is unique to the TSP Top End rebuild Kit collection. TSP recommends a minimum piston to cylinder bore clearance of 0.07 mm.
Piston Diameters:
- A Piston = 71.93 mm
- B Piston = 71.94 mm
- C Piston – 71.95 mm
Brian (verified owner) –
Everything I have from tsp has been extremely good quality and can’t recommended them enough
Brian A. (verified owner) –
Zak Jackson (verified owner) –
Good service and fast shipping! 🤘
Doug A. (verified owner) –
Steve was really helpful answering questions. Very responsive! Quick shipping too!
TERRY CONSTANTINE (verified owner) –
John G. (verified owner) –
Products are of high quality and kit came with all the components necessary to do a top end rebuild. Shipping was fast and parts were well packaged.
joseph w. (verified owner) –
Quite happy with the kit and customer service provided. I had some dumb questions and they were helpful and respectful. Parts arrived quick. I wouldn’t hesitate to buy from them.
Matthew Nelson (verified owner) –
Jeremy P. (verified owner) –
Brett M. (verified owner) –
Yes the whole kit includes every gasket and o rings to do a complete overhaul on your top end.
Steve B. (verified owner) –
This kit actually is complete. I didn’t have to order anything else while doing the top end rebuild on my bike. Comes with plenty of different gasket thickness to get the piston protrusion set correctly.
Jeffery D. (verified owner) –
Good price and Steve always answered my question when I needed help.
Richard Ulmer (verified owner) –
Kit is very high quality. Shipping was fast. Steve is very helpful. I emailed him with a question on Thanksgiving and he responded quickly. I will buy from South Bay again.
Brian J. (verified owner) –
I recently installed a TSP Kit for my TPI and it was not running right! After a few emails with Steve, he gave me some advice and things to check! I finally figured out the issue. The compression was too low when I did a compression check! Steve helped me with piston selection since I had to replate the cylinder. My order arrived within 2 days of the order. I could not ask for any better service. Thanks again 👍