The SH Engines PT2018-XGB Pro Off Road .21 Competition Buggy Engine is a great .21 engine option that delivers great power and run time, without breaking the bank. Package includes PT2018-XGB Pro .21 engine, head shim, collet and glow plug, as well as 6.0, 6.5, 7.0 and 7.5mm venturis to allow you to tune the engine to suit various track conditions.
Cubic capacity: 3.497CC
R.P.M: 35000 rpm
This product was added to our catalog on January 2, 2020
Do not run the SH 2060 pipe with this engine. I know it's the only SH pipe Amain sells, but it is awful. Performance isn't bad, but you will get horrible runtime. I struggled to get even 7 minutes on a tank with this combo, and was pitting at 6 minutes just to be safe. I've tested the Performa/Orion/CRF 2149 pipe and it's a night and day difference. With the 7.0mm venturi I easily get 9-10 minutes on a tank with no loss in performance.
With that out of the way, I definitely recommend this engine. Tons of compression when new, so be sure to take break in slow and pre heat it before starting. Break in was easy, and I had not problems with the engine dying. The carb is a long needle LSN and takes a little getting used to, but it isn't bad. I'm running a 0.5mm idle gap and have a good tune with 30% fuel. It runs hot. Around 270-290F with a race tune on the track. So far this hasn't caused any issues. Two gallons in and it's still got plenty of compression and a very stable idle/tune.
For $180 it's a steel. Very nice work on the sleeve, nice crank with counterweight slugs, and the venturis it comes with are nice. It'll keep up with any engine once you pair it with a proper pipe.