What does CR, KX, RM, YZ mean?

I have always thought about it, what do all of the two letter things mean? You know cr, kx, rm, yz, etc. etc. Anyone know what any of them mean? I gan gather that the F means four stroke, and that the R in some could be racing, but other than that I have no idea.

I heard that CR means Close Ratio and YZ means Yama Zinger. Don't know about the others though...

Close Ratio Fourstroke 450cc Race

Things that make you go....... HHHHMMMM

KX-kawasakicross?

RM-Ricky's motorcycle (I was gonna say repair monthly but this popped into my head at the last second)

SX-supercross, that is an easy one

This is one of those questions I was too embarrassed to ask.

I thought everyone (except me) knew.

Hope there are more replies/answers on this.

I dont think they really stand for anything. I think its just like a part number. I dunno, maybe? :applause:

I dont think they really stand for anything. I think its just like a part number. I dunno, maybe? :applause:

I think you're correct. But I'm still curious.

They are not acronyms, but merely part of the model number.

They are not acronyms, but merely part of the model number.

That sounds logical. Any idea as to the reasoning behind it?

yup the reason for a letter prefix for the bike is that the displacement is allready denoted in ###'s

imagine if you had the 300125759....

That sounds logical. Any idea as to the reasoning behind it?

I'm not sure I understand your question.

The reasoning behind what? As to why they choose the specific letters they do for each bike?

CR = Crash Ready

RM = Rebuild Me

YZ = YeeehawwwZ

SX-supercross, that is an easy one

i thought SX was...

err....

*nevermind*

CR= Close ratio as in gear box

WR= Wide ratio

YZ= An old shop in Cali. that made parts for early Yamaha trail bikes to make them racers

RM= I think Racing machine, as it replaced the TM, Trail machine?

Considering the first Yamaha was a YA1 I'm guessing that thru the years and models YZ was the last designation. I doubt they would start using YAA YAB etc....When more models were offered They just used common names for what they thought the bikes would be used for.When they intoduced the first true dirt bike it was the DT-1 D for Dirt.

TTR Trail

WR Woods

Xt Cross over Dirt or Street

My .02 but who knows

CR= Close ratio as in gear box

WR= Wide ratio

YZ= An old shop in Cali. that made parts for early Yamaha trail bikes to make them racers

RM= I think Racing machine, as it replaced the TM, Trail machine?

I'm surprised that the Japanese think in English.

I'm surprised that the Japanese think in English.

what you never saw star trek or star wars? :applause:

I thought that the R at the end of the hondas was for RED

then what does EXC stand for??? (KTM)

honestly I just think that the manufacturers just thought of cool sounding prefixes instead of a long serial #... "I have a d984k93 250F".... BUt some of them sound like they do stand for something:

DR- dirt/road

RM- Raciing machine

All of them do have a cool ring to them...

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