Adam MillAr shared MRE - Millar Race Engineering's post to the group: kawasaki kx 500.

69 comments
  • Ian Hamilton

  • Why would some one put a decompressor valve on a bike ?

  • Adam MillAr is that a special holder on the lathe? Or is it something you designed?

  • With the decompressor the 500 is as easy to start as a 125. You could even start it with sandals on

  • Made it to hold CR500 finner head pattern, wet pattern, pre '88 kx5 and later kx5

  • Zane Berthelson should buy a 125 then ...

    That's part of owning a 500 being able to kick it lol

  • Whatever turns you on. If you want to come try to start one when it's 20 degrees out I'll let you try to start mine.

  • How do u charge

  • Because they don't know how to start it with out blowing casings

  • Breaks kick-starter in the cold

  • Zane Berthelson wow that's cool

  • Bring it up on comp barely roll it over the top bring the kicker back up catcjt your spring give it hell .. Decomp made easy on the wallet

  • There are plenty of guys who don't want to kick through a boot, break cases, start the bikes on off camber situations, mid race etc. If it's not for you then please don't bother commenting.

  • On the KX heads it's 180$usd for the decompressor and install, 85$usd to alter the chamber squish. I can guarantee you that we will not anneal the casting like some other more recent decompressor providers.

  • Money ruckus .. Not needed over priced no valves sir explain your theory make me a believer please

  • Come try to start one in the snow

  • It snows here in west Virginia boys

  • Zane I can see the appeal but I've never had issues starting mine in the snow.. And my KX is only used as a snowbike! Either way tho everyone has their preferences!

  • Anneal the casting, what is that?

  • When u break yours & u eventually will u will get one..It took me 10 years to break my cases & it won't happen again with the decomp

  • The kick start shaft broke on a kickback which in turn broke the clutch cover open

  • I was in staging at the hillclimb in Billings MT, watched a short guy with a prosthetic left leg kick his 500 until he was almost faint. I stayed seated on my bike, popped the decomp open with a 450 hot start lever system of attached and then started my bike while sitting down. Dude was in our pit area for an hour or so and probably started my bike 40 or more times. Haha now go tell him it's not needed.

  • its when the head is heated way too much, changes the harness of the head, they get soft, don't handle detonation and warp easier. Be weary of any welds that look super buttery smooth or non existent, those heads have been overheated and will never work the same.

  • I want that clutch cover

  • Adam MillAr made that too

  • Made the clutch arm & chain guard to

  • I tried to find someone to modify mine but no luck.

  • What compression you running ? If I was to have a climber or drag bike it would be out board start

  • No need for it with a decomp

  • Well Adam MillAr is your guy then

  • I have a 73 mm kx 250 it has 215 lbs of compression the 500 holds at 190 lbs hhmm

  • Then don't get one..pretty simple..

  • Yup

  • Need to talk to him

  • Your an idiot .. Just as the rest get an education ..

  • I'm an idiot...ok bud..I guess I am if I'm still taking to u.. hav a nice night. Asshat

  • Does that arm change anything other than just looking cool?

  • Yup,ask him about it..

  • Oh I'm good I'm not lieing through my teeth

  • Just for curiosity sake,what exactly am I lying about ?

  • Sent him a couple of messages

  • Adam MillAr you run the GAHC??

  • I don't see the de comp valve. ??? I'm looking at putting one on mine. Where did they buy one from?

  • Never broke a case but I always carried a spare kick lever, like most people carry clutch lever, broke a few of them. This would be a great investment if you actually ride/race a 5 honey!!

  • I can supply the valve, do the install and alter the chamber if you'd like.

  • Look above the hose on the side of the head. Mines on the other side.

  • Devin Johnson it's been like 10 years since we've been there. Only ever did the spring deal and the little hill. Haha. Was usually a last minute deal to go if we got rained or snowed out of farming. Membership etc was too much to just run one day on the big hill.

  • oh fuck the membership lol i just do the climbs aha

  • Well my top already has two spark plug holes one for a valve. How much$ for a new top and valve and all?

  • Dylan Harmon , what year are you working with? It's a kx5?

  • 1990 kx500. ...this one

  • I've got a head I can sell you outright. Is it standard bore or do you need one with a chamber modified for overbore?

  • Probably not. I'll be .5 over bore when I get the jug back Monday.

  • Wow shit really got heated here over the question I asked ... I have owned a lot of big bore two strokes and Hi compression four strokes... I was always thought the right way to start them bringing it to top and jump on it . Never had a problem .. The reason I asked is I really thought it was just a scam and waste of money .. But to each to own ... I will just keep ponying up and kick them things over ...

  • no valves ...

  • Pope Douglas Ronald that's the way everyone starts them. What do / did you ride?

  • is this company based in the US?

  • I'm in Canada but sell and ship worldwide

  • so you sell heads with a decompression valve in it? or you do the heads?

  • Darren Fields I can work on your head if you posted it to me, or I can supply a new head.

  • what price are we looking at on both scenarios?

  • If you sent a head, before return postage ( 20$ in North America) and PayPal fee its 180$usd to do the decompressor and 85$ to cut the chamber squish. If you wanted to buy a head outright I'd be at 425$usd plus postage and pp fee.

  • This now

    Had a 85,86,99 cr 500 then some high compression XR 600

  • You can also find heads on eBay all the time. Get one and send it up so your bike isn't down.

  • I don't care how great you think your jetting and kicking technique is, try loading your KX5hunny on an open trailer at your house at 5 degrees, then travel 30 miles to the lake and learn it's -27 on the ice. Now kick it.....and kick it...and kick...and kick...finally you pull start it, good thing you brought a buddy to help. I wish I had a decomp lever on my KX, back then.

  • Exactly

  • By pull start you mean pull with another machine on 2nd or something then let the clutch out? Haven't tried it yet do have some trouble starting mine sometimes it's hard to find Tdc and sometimes I kick it and it makes a loud backfiring noise think it will be easier if I just tune my carb right though

  • If it makes the loud backfire PHWOOSH kinda sound, it almost started, you are close, don't give-up. But yeah, sometimes I will pull start it. I take a tow strap, tie it to the handlebars (hook it if you can perfectly in the center), hook the other end to another bike, quad, car or truck. But the guy pulling you needs to know how to do it too. I get it up to about 3rd gear speed and ease the clutch out (I shift to 3rd at a stop and hold clutch in). As soon as it start, pull the clutch in, and wave to the puller to slow to a stop if you can.