Originally Posted by
VPProUSA
I have some good news and bad news.
Bad news - The Arrow GTR-21 has been discontinued and we are now sold out. The good news is they have released an all new engine that will be available next week - the Arrow GTR-II Plus!
I do not have all the details yet, but the new GTR-II will come with the DLC Coated crankshaft and is a 5 port engine for more bottom end power like the old discontinued Mugen Ninja JX-21 BO1a. It should now not only have insane top end, but also have the torque that is required for Truggies.
This will be the first engine for under $200 to come with a DLC crankshaft.
wait...what? 8 days ago they released a version 4 engine with a new cooling head and then discontinued it and replaced it with a whole new engine?
Its impossible to keep up with these guys

Looking forward to hearing feedback on the new model. The original was a very good seller.