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Makotosun

RT1 air filter

  • Murf
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RT1 air filter was created by Murf

Hi everyone.
Having hunted around a bit it seems like original air filters are almost impossible to find. What do you all use? I have seen foam replacements from UNI and K&N or is there an aftermarket paper filter available?
Many thanks
28 Sep 2020 04:12 #1

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Replied by Bigdog302 on topic RT1 air filter

I use the Uni filter in my RT1B myself. it works fine and does a good job keeping dirt out of the engine.
2 1968 DT1s,1970 RT1M,1970 DT1C,1971 RT1B,1971 Honda Z50K2,1974 DT100A 1974DT250A,1974 Honda MT250,2 1975 DT400Bs,1975 Honda CR250M1,1978 DT175E,1979 Honda CR250R.
Dave
Jesus is Lord!
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Last edit: 28 Sep 2020 05:15 by Bigdog302.
28 Sep 2020 05:14 #2

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Replied by darinm on topic RT1 air filter

If you're going to be in the dirt at all the foam/oil is far superior to paper. I too like the UNI.
1972 Yamaha CT2 175
1972 Suzuki TS185 Sierra
2000 Suzuki RM100
2003 BMW F650GS
2009 Yamaha WR250R
2013 Yamaha XT250
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28 Sep 2020 08:50 #3

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Replied by Bigdog302 on topic RT1 air filter

I think the 72-73 filter is different, my bike is a 1971 RT1piston Port Badge bike.
2 1968 DT1s,1970 RT1M,1970 DT1C,1971 RT1B,1971 Honda Z50K2,1974 DT100A 1974DT250A,1974 Honda MT250,2 1975 DT400Bs,1975 Honda CR250M1,1978 DT175E,1979 Honda CR250R.
Dave
Jesus is Lord!
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29 Sep 2020 13:03 #4

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Replied by Murf on topic RT1 air filter

Thanks everyone. I think the part numbers for the RT1B are 2141445199 and 2141445800. It looks like a UNI filter is the way to go if I draw a blank on original. Is there a supplier in the UK that anyone is aware of?
30 Sep 2020 01:11 #5

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Replied by Swoop56 on topic RT1 air filter

Just be aware that the supplied cage with the Unifilter is just a shade too long for the
stock airbox . If you still have the stock Yamaha cage , just slip the unifilter foam onto
that . Otherwise , you'll have to shorten the Uni Cage by 8 - 10 mm .
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30 Sep 2020 04:00 #6

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