How do you derestrict a Suzuki LT-Z50 Quadcycle?

Answer 1

Taken from info i found about de-restricting the LTZ50

My son rides a Suzuki LTZ-50 (he's 5) and we would like to remove the governor so it can go faster. Is anybody aware of how to do this or if the manual will tell you how? The place where we purchased it from wants us to bing it in and they can do it. However, we would like to do it if we can and then put it back in once our younger son is old enough to ride! Any help is appreciated. THANKS!!!

It's in the manual, but you'll need an air imact gun to remove the pulley nuts. I'd spend 30 or 40 bucks and let the dealer do it.

Mine was removed during the PDI before I took it home.

Huh? Is this different from the LT-A50 (two-stroke version)? I have one of those and both the owner and service manuals for it and don't recall anything about a restriction on a pulley. The restrictions on the 2-stroke are in the intake port, the exhaust port, the throttle control, and the secondary carb jet.

The book we have says you need some sort of special tool. took ours to the dealer and for 39 bucks it goes about twice as fast. I think it's a spacer inside the trans. Just tell them you want to put it back later and save the spacer.

Hmm, the 2-stroke version doesn't have a transmission - just a centrifugal clutch. The 4-stroke model must be a lot different in more than just the engine.

Both of my boys have the suzuki 50's. My oldest has the LT50A (2stroke) and my youngest has the new LTZ50(4 stroke). There is no need to pay a dealer an absurd amount of money for a 5 minute job you can do at home. I asked my dealer and they wanted to charge $125 due to labor which included disassemble and reassemble. For the LTZ50 all you need to do is remove the side plastic and case cover as shown in your manual. Next pick up a nice bottle of champain for your wife. After she starts drinking, take the cork and use it as a wedge between the gear and the engine. This will allow you to remove the nut without destroying the aluminum case. Once the nut is off, remove the 1/4 space and reassemble the bike. Until CT racing comes out with the new CDI box and exhaust, there's really not too much more to do to that bike. Now the LTA50 is another story. After removing the two restrictor washers, you can open the carb and adjust your needle position as well as remove the secondary jet plug. It's a small set screw covering the secondary jetting. This will give the bike a little more top end. Hope this helps:^)

Any word on when CT will come out with a new CDI??? It a damn shame that such a nice mini is cripple by such a restrictive CDI..

CT Racing was supposed to have the CDI available by December of 06. From what I've been told is that they ran into some unforseen issues with the upgraded CDI and may not be going forward with production. I've started to look elsewhere for this as well as other upgrades for the fourstroke 50. No luck yet.

the only engine/trans performance upgrade to my sons 2006 ltz 50 ive done, was to remove the clutch restrictor ring which made a difference but it still was a pig up any kinda hill. i pulled off the exhaust to see if there was a restrictor washer at the head, no washer. i then pulled the baffle out of the pipe, BINGO, the baffle has tiny holes that are covered with a fine mesh screen that plug easily, i don't know how this thing actually breathed. heres what i did.

remove two 8 mm bolts that hold the baffle in at the end of the pipe and pull baffle out.

take a sawsall or hacksaw and cut the perforated end of the pipe with screen off (about 2 inches) and throw it in the trash

reinstall baffle locktite bolt

now that the exhaust can flow the bike has way more power, goes up hills, sounds louder/cooler but is not obnoxious, has some backpressure still, and the plug has good coloring so there is no jetting issues to address....................and the best part its FREE.

I've done the exhaust mod, then went a couple steps further. The air box is restricted to, I drilled a few more holes in the end of the air intake on the box, then pulled the carb and drilled the jet out one size bigger, I think two sizes would be better. This thing really runs great now.

So I see you say to unbolt the two 8mm screws to remmove the baffle. So might next question is are running a stock pipe, cause my 07 does not have any screw to take out. It is one full piece for the exhaust and the muffler is one solid piece so the end cap will not come off. I also read about drilling holes so it can breath better and install a bigger jet, but what about the cdi. I 've read that the cdi is bad and to fix it you will need to buy an aftermarket cdi, is this true? Thanks for the help!

slot of guys are running the ltz90 cdi and getting the best results. i guess with the dynatek one they have stalling issues. i just got my sone one and have been researching this quite a bit.after he gets to be a better rider by mid summer or so i will be doing a pipe or pipe mod, airbox mods, 90 cdi, and clutch weights to create a higher stall speed to get it a bit more into the power before it takes off.should run pretty decent then.

ct racing (562-945-2453)makes a kit i believe inc. cdi box , full exhaust air filter and jets. there's also a 3 tooth larger rear sprocket for take offs . as far as your mod your cutting your spark arrester off , for the person with the newer bike there's one screw on the bottom side at the very tip of the exhaust take it out the spark arrester should slide out save yourself the trouble of cutting it and just leave it out and now you can re-install it if you ever want or need to unless you ride somewhere that requires and inpects them it won't hurt anything to run without it