strike250

The old parts numbers for the pre-2016 250's internal transmission are: MAIN SHAFT P013000222010000 $75.00 (OLD PART #) MAIN SHAFT P013000222010200 $75.00 (NEW PART #) OUTPUT SHAFT 22300-013A-0000 $140.00 (OLD SHAFT) OUTPUT SHAFT 22300-013-0000 $140.00 (NEW SHAFT) COUNTER SHAFT 22220-013-0000 $105.50 (OLD SHAFT) COUNTER SHAFT 22220-013-0001 $105.50 (NEW SHAFT)

There is no change to the clutch assembly, both the primary and secondary clutch assemblies are the same in all years. They changed the gearing on the shafts in the transmission which has a direct relation to the output shaft speed. This along with the rear gearing and the modified ECU, keep the 250 at a to speed of about 32 is mph. It also controls the RPM so that the clutch wont engage all the way. I am able to open up the ECU through software programming. Also I have sprockets for the rear to allow a better top end speed. But to change everything back to the pre 2016 version, you would have to split the cases, and change the three shafts inside the transmission. This is not a realistic option for most. So, with the ECU opened up and set to pre-2016 flash, and the rear sprocket at about a 40 tooth, it seems to help a lot. You will get a higher top end but still keeping the off the line speed most of us enjoy. I call it a compromise.

Wow, what great questions. I will do my best to answer them. First off you had asked about the EFI Delphi MT05 module has been altered since 2017. they did change things to slow down the UTV per customers complaints that it was going too fast. So, being the large company HiSUN is, they wanted to avoid any litigation in court and damages. They altered the vehicle in question to slow it down. They did this by doing a couple of things, one of them was to change the mapping in the ECU to control the top RPM limits. Second was to change the gearing. This was done in two ways, first was changing the final gear ratio from 11 front sprocket and 38 rear sprocket, to a 11 front sprocket and a 42 rear sprocket. The second thing was to change the internal gearing. They changed the main shaft in the transmission, the output shaft and the counter shaft. They all have gears that when changed with the final gear ratio helps keep the unit down on top end speed.

Never, now we all know lol

Here are a couple of pics of our new Trailer Hitch for the Sector 250. And no, it doesnt hit the chain when the unit is compressed lol. It bolts on, is powder coated and attaches to the units frame. It has a standard small 1 1/4 inch receiver.

The only real difference is the plastic. Otherwise the vehicle is pretty much the same. The engine, suspension, electronics and all are all the same as the Strike 250. The only difference is the shift linkage, and the rear body. Even the OEM service manual is not 100% accurate either, so if you have any questions, please feel free to just ask and I will do my best.

Don't forget about the new exhaust pipe

Well, we have finally finished our new exhaust system for the Strike and Sector 250. It bolts right on, weighs 6.2 lbs lighter than the OEM muffler assembly. It is rated for no more than 94db for trail and track regulations. It also sounds and works amazing. We have priced it out at $299.99, far below anyone else making a system for these units because we want to give those who have been waiting a while for them a price break. It is also spark arrester approved.

Hello there, I know about the early cut out on the newer models. As for the RPM limit, I have seen the gauge and know it says a high RPM, but a few things come into play about that. First off is that most gauges show a higher than capable limit, in cars, truck, motorcycles and more. This is to give the illusion that the vehicle can go crazy with the RPM range. Reality is that most vehicles have a RPM limit below what the gauge actually says. This is for reasons of reliability and engine safety. The HiSUN is good till about 8000 or so RPM. Anything over that and the horsepower starts to fall. On the newer ones the gearing is also changed. The rear sprocket is a 42, and used to be a 38. The spark cut out to limit the speed to around 30 can be changed with some ECU programming. We are changing the rear sprockets to 40 and opening up the ECU and installing the tune of the 2015 ones. They seem to run pretty good with this configuration. When an engine revs too high, some things can happen. One of the most dangerous things is to have the valves float and that could lead to the valves hitting the piston causing damage. The second thing is the loss of power when it revs too high. the engine and cams can only produce power until a certain level, so all that noise will no nothing for more power, just make it sound like a buzz box. So again, the answer to your question is that it can safely rev up to about 8750. but the power really stops at around 8000. In these small engines, they really rely on torque, and that is produced down low anyhow. Since they only have about 12 to 15 hp stock, even with a race set up, it will go to about 20 ish. which means not a lot of hp to get these things moving. they really crave the torque to get them up and going, and that is produced at a lower RPM rather than a high one. I hope this answers your question.

Available now

Here's some pics to view of the new trailer hitch

I liked what you did to your Sector a lot. Our hitch design mounts to the frame, so that the trailer doesnt move with the suspension. They are in powder coating now and should be ready by next week. I liked your hitch big time. Great job. I also love your large tub. Impressive

Well, after much time getting it done right, I am finally done with the new exhaust system for the Strike and Sector 250's. It is getting certified for Spark Arrester currently and should be available by mid next week! It will retail for $299.99 for now, then back to retail later. I want to give all those who have waited a good price right off the bat. It is mandrel bent, carbon fiber canister, with spark arrester and certified at 94 db. So it is track and trail legal. I will have 10 available by next week, and then more following the next two weeks. So, first come first serve for the first 10.

For the Sector and Strike 250's. Hello there, we are now stocking the electrical connection to the rear plug that allows easy aftermarket installation for lights, light whip or more when the key is on. No more cutting into the factory harness to find the right wire to use. With this plug, you can tap it into your accessory and simply plug into the OEM harness. Weather proof connector. Can also be used for a license plate light on the street legal registered units. Comes pre-wired with correct color code. (photo not showing actual plug)

I now have different size rear sprockets for the Sector and Strike 250's. Check out the website and look at the different tooth sizes. Larger to go quicker, and smaller to go faster. Made in the U.S.A. and with strong aircraft 7071-T6 alloy. 250UTV.com

Finished with Sector 250 Hitch receiver kit. Will have a pic on the website soon. bolt on and strong, with powder coated finish.

Hello there, just to keep those who own the Sector model up to date. We are working on lift kits now for the Sector line up, for all engine sizes. We are also working on more, like storage boxes for the Sectors as well. We are also building trailer hitch set ups for the Sector 250. We are working on seat belt by pass connectors and rear light/license plate light connectors for the OEM connector in the rear. Keep an eye on for more accessories at our website www.250utv.com Please let us know if there are some things you are looking for that are hard to find. We just might make it for you! Matt

Love the pics, it looks great.

There are a few mechanical issues to address when thinking about changing turning radius. The ability of the OEM steering box/rack. The length of the OEM tie rods, the steering stops built into the OEM spindles. All of this has to be addressed when trying to change the turning radius. You can adjust the steering stops on the spindles, but if the OEM steering box will not allow more movement in the gearing, then there is nothing you can do to get a tighter turning circle. You might try to go with an aftermarket steering rack. You will need to measure the distance from tie rod outer end to the other outer end to try to get one with the same distance in order to have a correct toe in measurement. Making sure the steering shaft will also bolt to the new steering rack as well. Or you will have to cut and weld to make things work. It can be done, but will take some thought.

Just an update on the slow unit issue. I wanted to make sure I get back to everyone regarding the slow top speed on their Hisun 250's. After confirming with HiSUN, the 2017 and newer units have a different gearing inside the engine as well as a modified ECU. This was in response to customer feedback regarding top speed. Some customers were complaining about the units going too fast. So HiSUN changed some things to help control this. I am sure this is the new response from most manufactures now a days. As no one wants to get sued or have legal issues. It has gotten to be a very liable state we live in now, and if just a few people complain about something, things get changed. I am working on new sprockets which should be here within a week. I am also working on the ECU and hopefully it will be done about the same time. I have yet to confirm if the old gearing will still be available or if it will automatically supersede to the new part number. I will keep everyone up to date on my website. Matt

I'm glad you had a blast. You should send in some pics for us to share your fun.

Yes, I am very close to making a public flash for the OEM ECU's. As for just taking it to a local Delphi shop, it's not that easy. Yes others like Harley use the Delphi MT05, but they use different language. It took me a while to gain access to the language needed to rewrite the ECU. But I finally got it and am working on making more power while still being reliable. I will make everyone aware when its done. But I want it done right. I will either have it available to purchase as a new ECU, or have the customer send me their ECU to remap. I'm thinking some will want to keep a stock ECU for one reason or another.

Hey Jeff, I can totally understand your situation big time. I am not sure why it took you so long to get parts from the manufacture, I am not a dealer and have not really had any trouble getting parts I need, and even some odd parts at that I have to admit. I agree the fit and finish is nice, but without the dealer support its hard to make it as a dealer. I have worked for one before some of my deployments and am familiar with the problem with warranty and customer satisfaction. No one wants to buy a vehicle and have it break down right away. I don't believe they set up dealers just to get rid of inventory, perhaps its just to help get more dealers out there for support as well. The larger the dealer network, the better its going to be for the manufacture to support the dealer network. It sounds like maybe you had a bad dealer network manager who did not support you. I also don't know what area you are in, but here in southern california, there are none of these really out there for sale used. I have looked! If they had a lot of dealers selling them to auction houses, then the market place would be showing them available, but I just dont see that. I cannot comment on the generator side of life, as I know more about the UTV side of things. But I have been a mechanic at a large name brand dealer, (name not important) and we had our share of faulty equipment from them as well. We have had issues with what I called 'made on friday' where it looks like they just put it together to get out of there, and they just hoped the dealer would take care of it. All I tell my customers as a service center and performance shop, is that we like to really go through them before they go out for the first time. I like to look over all the nuts and bolts, run them for a bit and look for problems before they use them. This way I can make sure their weekend will be the best possible. I am sure you have great mechanics, and have probably been in the industry for a long time, and once in a while these things do happen. Remember the Polaris fire recall? it was hard for the dealers here to deal with that when it came out. I am also sorry to hear that you had such a bad experience with the dealer network, that sounds like it shouldnt have happened that way, or perhaps they should have been there more for you. But again, I am only going by your few words and I am sure I don't have all the information available. I hope you have recovered and are doing well now. I wish you all the best and success. If you could, perhaps you might tell me some of the issues you had with the units breaking down within the first 5 miles as you said. I would love to be able to touch up on these areas with my customers, and perhaps prevent any problems happening on my end as well. In this business we all need to support and help one another I have found. so, if you have any specific areas that were causing you problems, please let me know about them. Thank you

Yes, we enjoy our Hisun 250 as well. When we go camping, there are a lot of others that go with us, and what we do is put the Hisun out by the other off road vehicles and when anyone in our camp want to ride, it is like community UTV's. It's great as everyone can ride this fun UTV. Parents get to ride alone with their young ones, and the young kids growing up get a chance to ride in something that looks like the big people get to use. Most of the time it is simply riding around the camp grounds all day, (hard to get used to them just going in circles lol) But everyone has fun. They ride it until it runs out of fuel lol. None of the kids or adults want to get out once they get a ride in it. The folks like the ease to use the UTV, automatic and doesnt go to fast. The kids love it because they think it goes fast lol. This way no one feels left out of the fun when maybe they didnt bring any off road vehicles to use, or there's broke down. You really can't go wrong for the money.