NaN -Infinity

HITLIS YZ250

Name: HITLIS YZ250
Brand: productivepowerllc
SKU: HW3.5
Price: 347.95 EUR
Availability: InStock

HITLIS YZ250

By Productive Power LLC

€347,95 EUR

Sale Sold out

Shipping calculated at checkout.

The HITLIS™ Power Valve Control Kits replace and enhance the power valve controls and governor configuration for all current generation Yamaha YZ250 and YZ250X motorcycles. With their patented design, the HITLIS™ Kits create the most effective power delivery possible for all riders.

Quantity

See below for further breakdown of HITLIS Woods vs HITLIS Desert

What's in the Box

A. Closing Fork (x1)
B. Left Pulley (x1)
C. Right Pulley (x1)
D. Left Torsion (x1)
E. Right Torsion (x1)
F. Governor Spring (x1)
G. 1.1mm Thrust Washers (x3)
H. .8mm Thrust Washers (x3)
I. .3mm Shim Washers (x3)
J. .2mm Shim Washers (x3)
K. Linkage Lockup Tool (x1)
M. Valve Shaft Screws (x3)
N. 3mm Hex Key (x1)
O. Brake Pivot Lock Nut (optional) (x1)
P. Cover Screws (optional) (x4)
Q. Stickers (x2)
R. Plano Container (x1)
S. Instructions (x1)

Shipping

Domestic
Free shipping to all 50 states. Delivery usually occurs in 2-5 business days after shipping.

International
All international orders have a $30 flat shipping rate. This does NOT include taxes and duties. Taxes and duties are to be paid by the customer upon pickup, Productive Power LLC does not pay international taxes and duties. Items are shipped via USPS Priority Mail International. Delivery usually occurs 1-2 weeks from shipment.

See Shipping Policy (link found at bottom of page) for full detail of Shipping Policy.

Returns

Domestic
We offer free returns within 60 days of purchase, if in new uninstalled condition.

International
No international returns are offered at this time.

See Return Policy (link found at bottom of page) for full detail of Return Policy.

View full details

The Hitlis Story

Since its initial release in 1974, I, along with countless others, believe the Yamaha YZ250 (and YZ250X) to be the best off-road motorcycle ever made. However, there is one often-cited issue with the current generation’s engine that has persisted since its introduction in 1999: it does not provide a linear power output. Additionally, no aftermarket parts have been able to offer the combination of full power and smooth control that everyone desires.

Among the many thousands of hours I have spent riding, working on, and trying to perfect these bikes, I found myself making a cutaway engine. This revealed the reason for the non-linear power delivery: spring resistance inside the PV box. While this spring resistance was necessary to activate the secondary power valves, it was unintentionally disrupting the linear nature of the governor. So, I set out to fix it.

With God’s help, I was able to envision a new system that linked the power valves to the governor while simultaneously eliminating this spring resistance. This new patented system gives the governor complete control of the power valves, and thus complete control of the power output. From there, my focus turned to the governor, and a new governor spring was created to leverage Yamaha's superior cylinder and power valve design. Additionally, adjustability was incorporated into this new governor spring, allowing each rider to fine-tune it to their liking; you can mellow it out as much as you want, or speed it up as much as you can handle. These improvements then highlighted the need to change the valve sequencing in order to make the perfect release of linear power. After trying hundreds of sequence combinations, we were able to accomplish just that.

What’s it like to ride? Simply put, it’s incredible. The bike’s acceleration and deceleration are as smooth as glass. Your newfound control of the power output makes you feel like a surgeon with a scalpel. Everything seems to work better; the traction is better, the suspension works better, the braking is more effective. You end up being smoother, which is safer, while at the same time faster and less fatigued.

All of the components of the HITLIS kit are patented and made in the U.S.A., using the highest quality methods and materials. Step-by-step installation videos on our website make installing the kit easy for riders of all mechanical abilities. Whether you’re plunking around with the kids, in competition, or both, the HITLIS kit will elevate your riding experience. It is the first thing that should be done to these bikes.

- Tim King, Founder, Productive Power LLC

HITLIS Woods: Optimal Precision for Lower Ground Speeds
Experience the unparalleled performance of our HITLIS Woods Kit, expertly designed to cater to lower ground speeds. Its carefully calibrated valve sequencing takes into account the heightened demand for engine control in lower gears. The result: The most linear power output ever made.

If your riding terrain involves tight, technical, single track trails, or if you're a Vet motocross rider seeking the ultimate upgrade, the Woods Kit is crafted just for you. Embrace the unrivaled precision and performance it brings to those who frequently use 2nd-gear to take on their challenging off-road conditions.

Beyond its remarkable control on the trails, the Woods Kit offers similar potent power and the same governor adjustability as the HITLIS Desert Kit. This means that even if your adventures take you to wide open places, you can trust the Woods Kit to deliver a thrilling experience, seamlessly adapting to varied terrains.

Make the ultimate upgrade to your bike's potential with the HITLIS Woods Kit and revolutionize your off-road experience. Embrace the newfound control, power, and adaptability, and conquer any terrain with the utmost confidence.
HITLIS Desert: Superior Control for Higher Ground Speeds
Experience the unparalleled performance of our HITLIS Desert Kit, expertly crafted to cater to higher ground speeds. Its carefully calibrated valve sequencing takes into account the increased load requirements on your engine while in higher gears. The result: A strong and potent power output, delivered in a smooth and linear fashion.

If your riding environment is more 4th-gear oriented, on fast, open, flowing trails, the Desert kit was designed for you. Unleash explosive yet controlled power and performance as you maneuver through expansive open terrains. Calling all Pro motocross riders - the Desert Kit is tailored for you. Unleash your true potential and dominate the track with the commanding power and precision that only the HITLIS Desert Kit can offer.

In addition to its exceptional performance in high-speed environments, the Desert Kit offers a similarly smooth-controlled power output and governor adjustability as the HITLIS Woods Kit. So, even if you find yourself amidst tight, technical trails, rest assured that the Desert Kit will adapt effortlessly, providing you with a versatile and exceptional riding experience.

Revolutionize your off-road journey with the HITLIS Desert kit, and enjoy power and performance like never before.

Frequently Asked Questions

What does the HITLIS kit do for my YZ250 and YZ250X?

The HITLIS kit improves throttle response and power valve control, offering smoother and more precise power delivery for technical and high-speed terrain.

Which kit should I choose?

The Woods Kit is ideal for slow, technical riding, while the Desert Kit excels in high-speed environments.

Is the HITLIS kit easy to install?

Yes, we provide an installation guide and video to simplify the process.

You can watch our playlist by clicking here.

Is the kit compatible with my bike?

HITLIS kits are designed specifically for Yamaha YZ250 and YZ250X models.

Five Stars Hitlis

It was a pleasure dealing with you guys.
Seamless process from the ordering to fitment of the product.
Performs 100%

Just buy it already

I picked up a YZ project and wanted to try to build a medium enduro bike that wasn't just orange or orange adjacent like all my buddies. I previously rode a husky and was on a mission to make the stock YZ work but it was hard to find usable power when things got technical. Thumpertalk led me here and well, the HITLIS accomplished all my goals better than expected. Instead of describing the benefits to power delivery, traction benefits and decrease in fatigue like many others have, I’ll focus on the customer service. Tim is awesome. You can tell that he’s someone who not only believes in his product, but he genuinely wants to help people out. Tim made himself available at every opportunity just to make sure that my experience with his product was top notch. As a random customer off the internet, I was blown away with the support I received in addition to the massive performance gains. I’ll be recommending this kit to anyone who will listen.

Smooth!

I've only got a few rides on the woods kit and man is it smooth! I have an apex head with mx dome along with 8 oz ffw and it is amazingly smooth. I ride a mix of hard enduro and flowy singletrack. On the hard enduro stuff it's a game changer. On the flowy stuff a gear higher is nice. I do feel like I have to shift alot when things open up a bit to keep it in the power as the top end seems to be flat. Maybe I'll try the desert kit just to see or go back to stock pipe as I'm running a gnarly which is known to not have much top end. Overall I'm really impressed with how smooth the power is delivered. Mid range is absolutely amazing! Great product and easy install!

Insanely Awesome!! Desert kit used for Motocross!

Brad here from Ontario Canada. I reached out to Tim at Hitlis about getting the power valve kit for my 23 Yz 250. I went with the desert kit as I ride motocross only never trail ride. Installation was fairly simple, Tim even talked to Me on phone to give Me a pointer on valve set-up. The bike works so good now, its very smooth with the Hitlis Desert Kit. Pulls hard but smooth right off bottom right through the entire Rpm! It even sounds better too. After riding it for a bit with the Desert Kit, Tim gave Me his suggested Carb Jetting specs for My bike. I wasn't sure if it would make a difference or not cause I thought it ran pretty dang good but after changing it to Tim's jetting specs, I am once again blown away with the difference in power at all rpm's with new jetting. Tim really knows how to turn these Yz250's into real Race machines! The throttle response is instantaneous and very crisp, pulls very smooth and just keeps building all the way to top end. I Highly Recommend the Hitlis Desert kit and Jetting Specs!

Amazed!

I’m defiantly going to make some bad habits of not using the clutch after this. It just climbs and climbs with no problem! Now to work on my speed coming back down after getting to the top!

Amazed how it can come back to life when putting around in second gear all the way down to idle then straight to life with a blip of the throttle.

Absolutely in love and can’t wait to put in the SX head and see even more power to be tamed.

Sosososo happy and thank you so much for putting in so much time and effort into this amazing piece of tech. Amazing tech and amazing support. You’re an absolute rock star. 10/10 from me.