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Genuine Mikuni needle and seat a must, or Z1/Jets R Us/K&L okay?

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    Genuine Mikuni needle and seat a must, or Z1/Jets R Us/K&L okay?

    Alright so I found my buddy a project bike GS750 that caught on fire from the cabs flooding and the valves and timing being out of adjustment and backfiring. We're doing a thorough rebuild of it, and I wanted him to buy a new Suzuki petcock since the old one was probably damaged after a minor carb fire, and also wanted to get new needles and seats.

    I had thought that I had purchased the genuine Mikuni stuff before for about $20-23 each for a needle and seat set, but now all the online places are telling me a 1st gen GS750/850/1000 needle and seat set for ONE carb is $32. Z1 sells some sets for $6, and jetsrus.com sell some sets for $16.

    Has anyone had any good long term experience with using the cheaper ones? I have gone to a fairly strict policy anymore for most parts other than Shindengen SH775 regulator-rectifiers, tires, cosmetics, and AllBalls bearings and seals, of using almost all OEM parts. Bad experiences with some aftermarket parts.

    Anyone care to chime in? Trying to get my friend's bike built rock solid and dead reliable, as he is not as mechanically or motivationally inclined on wrenching as myself. Good practice as well, as I hate replacing parts that I have already replaced in the recent past due to failure. Original parts on my truck or motorcycle last 30-35 years, and then replacements last 1-5 years... no good.
    '77 GS750 920cc heavily modded
    '97 Kawasaki KDX220R rugged terrain ripper!
    '99 Kawasaki KDX220R​ rebuild in progress
    '79 GS425stock
    PROJECTS:
    '77 Suzuki PE250 woods racer
    '77 GS550 740cc major mods
    '77 GS400 489cc racer build
    '76 Rickman CR1000 GS1000/1100
    '78 GS1000C/1100

    #2
    I use K&L with no problems.
    1983 GS 1100E w/ 1230 kit, .340 lift Web Cams, Ape heavy duty valve springs, 83 1100 head with 1.5mm oversized SS intake valves, 1150 crank, Vance and Hines 1150 SuperHub, Star Racing high volume oil pump gears, 36mm carebs Dynojet stage 3 jet kit, Posplayr's SSPB, Progressive rear shocks and fork springs, Dyna 2000, Dynatek green coils and Vance & Hines 4-1 exhaust.
    1985 GS1150ES stock with 85 Red E bodywork.

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      #3
      Same here. No issues with K&L valves and seats. Never purchased OEM float components since the cost is way too much.

      1980 GS1000GT (Daily rider with a 1983 1100G engine)
      1998 Honda ST1100 (Daily long distance rider)
      1982 GS850GLZ (Daily rider when the weather is crap)

      Darn, with so many daily riders it's hard to decide which one to jump on next.

      JTGS850GL aka Julius

      GS Resource Greetings

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