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well then maby you would be suprised lol . im not sure i havent lined them up, but this xcr pulls,HARD!!!. i think the f7 might top out a bit higher rigth now as is vs as is, but i fuked the gearing in the xcr its way low, 22-41 i know it can pull some nasty tall gears it had 26-38 when i got it f7 has 24-39 (1.62:1) im going to put the same in the xcr and see how it likes it , f7 is lighter, but the xcr makes more power. both sleds are arguable the last of the fast 2 stroke sleds ever made. a mach z would be a good addition to the collection but iv never liked them so i dont think i would own one. i would like a viper

hands down f7 is the better sled but not sure whos faster, i ran 110 on the xcr then blew a belt still pulling,, f7 did 115 and i ran out of lake.

i know the 03 f-7 was fast,then they detuned them a bit in o4,so i dont know about a 04 f-7 but a triple probably will always have more top end,but you just need to beat someone acrossed the odd lake. lol

03 had different gearing and 10 tooth divers i believe,

The 03 F7 was a rocket...they all blew up...but it's deadly fast.

All out radar running the xcr MIGHT put up a better number...might.

The is no way pistons will make any noticeable difference in performance...NO WAY.

the frames in the 03 are weak, they didnt get much better but the 05- newer ones have different frame brace and mounts for the pipe. 03 might of had a different ecu, the 04 has least timing advince, the 06' has the most timing.

they all had slight differences but all can be made to beat on each other. if i could i would find an 06 sno pro chassis and dunk the f7 motor in it, and gear it low. That would be a fun sled where i live ..

my o4 sno pro f7 ran a three degree key d@d monster single boondocker programmer and dyno tech research, was the best investment in Batavia new York, burned it down on the dyno but it was fun and fresh oem pumpkins in it and put tonness of mile on it after lol might have a y pipe for you I will have to look

COOL iv been looking for a D&D Y-pipe and single pipe, nothing yet.. i'll have get a fresh set of pupmkins for it









i'v seen worst pumpkins than this ,
the rings still have some titanium nitride coating on them, so thats good ... my compression is 125 still so i migth throw it together for another season. worst case i'll end up needing a bigbore kit

well, i got tired of waiting for parts, im short a couple bearings that didnt "NEED" to be replaced and i wont have a speedo because i broke the magnet on the drive shaft. i threw it together and its +5 outside imagine that , oh well i have a Z 570 with a hole in the piston i need to make room for f7 is serviced, clean, GO PRO 3 mounts installed.

so this one was re-built with oem pistons,, ring spun and caught a port.....imagine that. with an oem piston. wtf.