Simple GREEN

iTrader: (23)

hey I was wondering what pipe would work good with the older ninja the GRP Ninja .21 MR21-BO1A. I live at high altitude (the mile high city..)
I have a jp-2 but I don't know how well that will work.

absolutemayhem

iTrader: (1)

a good mid-range pipe works pertty well....jp2 should be alright.

tallyram

iTrader: (11)

always had great luck with a dynamite 053 pipe set!

dreaux

iTrader: (5)

how does the old ninja compare to the new o.s. ninja? Just curious

PowerHouse

iTrader: (66)

With the thinner air, a tighter pipe may work better. I would look into the 2042 or the 2053. The 053, 086 and 007 from dynamite may work ok too but I think you will like the longer header that comes with the other two pipes. The JP2 will probably be alright but if you experience a lag or hesitation when accellerating, it will most likely be due to the larger volume pipe not creating enough back pressure. Try it out and see what you like.

absolutemayhem

iTrader: (1)

it was a real smooth motor with screaming top end....might of lack on the bottom a little.

Simple GREEN

iTrader: (23)

Thanks a ton for the info, I am thinking of going with the dynamite 053 pipe,
looks great quality and is priced right.

tallyram

iTrader: (11)

100% accurate description! really easy to drive and a very stable engine. tunes great and idles well!

Simple GREEN

iTrader: (23)

I have just purchased one off here brand new so I am very excited to see how it runs

mugenize1

iTrader: (-1)

I just purchased an GRP tune .28 truggy PromoKit - GT01K-28TR can't wait to see it in the MBX6T.

rcREALITY

iTrader: (25)

this engine is awesome the dynamite pipe is really nice as well +1

absolutemayhem

iTrader: (1)

i got the ninja .28 and the grp .28( basicly the same) 53 will give it good responsivness in the low...and the 86 make the top really scream...its very noticable on this engine.

bobbyblaze

iTrader: (1)

believe it or not i had mine when they first came ...my ninja have close to 18+ possible gallons and sometime loosen the plug to start it....i wish they still make them

trevor15308

iTrader: (3)

dynamite platinum 053 is very good

mugenize1

iTrader: (-1)

That's all I own is Ninja or GRP I have 2 Ninja on-road engines and 2 GRP .28 tune-line I also have 1 GRP .21 tune-line they are great. They are all new.