512-481-2355
[email protected]
HP Race Development
  • Home
  • HP Store
  • News & Articles
  • Engines
    • Two Strokes >
      • Port Timing Calculator
      • Honda
      • KTM
      • Yamaha
      • GasGas
      • Husqvarna
    • Four Strokes >
      • Honda
      • Yamaha
      • Kawasaki
      • Husqvarna
      • KTM
    • Dyno Testing
  • ECU
    • GET ECU
  • Suspension
  • Contact
  • Company
    • Jobs and Careers
    • Rider Support
  • GET Brand
  • Titanium Connecting Rods

Innovative Leader in Performance.

We build championship proven products.

#chooseHP
#GoFaster
#dynoTested
#holeshotProven

#BuiltToWin
#MadeforChampions

Click for Latest News
 Ty Masterpool on the podium for his 2017 Loretta Lynn Supermini 1 and 2 Championships powered by HP Race Development engine package

What We Do

Accomplish your dreams!  We are a multi-time National Championship winning shop.  We provide all the performance, testing, and consulting resources necessary to win.


Race Engine Development​
We specialize in building our customers engines that give them an advantage.  When you are ready to be better than the competition.
Suspension Performance
Suspension is highly subjective to each individual user, and equally important to match each individual motorcycle and chassis.  We specialize in giving you that perfect fit for you and your bike.
ECU, CDI, Tuning Specialist
The modern race bike requires precise tuning, knowledge, and expertise to unlock all possible power, ride characteristics, and delivery of power.  HP is a full on specialist in ECU tuning 2 and 4 stroke, CDI development for 2 strokes, and general mapping needs.
Trackside Consultation and Data Logging
We offer trackside testing for both engine tuning and efi mapping, as well as suspension tuning and valving. 
Four Stroke Porting and Induction
Take your race engines to the next level with our race packages. Advanced Research and development has netted us multiple championships against teh worlds best.

Big Bore Two Strokes
We have developed some incredible big bore packages over the years - if we do it, HP does it right! 
World Leading 2 stroke performance
Our two stroke are industry leading and we never stop developing. Holeshots and titles back up the hard work we do at the shop.
Dealer Programs
Want to sell what we sell?  Great!  We offer a dealer program on almost all of our HP Race Development services and products.  

​
​
HPR Enterprises , LLC
4707 Youngsford Road
Marion, Texas 78124

(512) 481-2355

[email protected]


  • Check out our Youtube channel!

Items from our webshop

ECU and CDI

Shop

Engine Parts

Shop

Apparel

Shop

Featured Deals!

On Sale

On Sale

The ultimate YZ250/YZ250X Piston Kit 1999-2025

$229.95 $199.99

The ultimate YZ250/YZ250X Piston Kit 1999-2025



Looking for the best yz250 piston money can buy? Get the EXACT technology we used in our main event placing yz250 two stroke ridden by Jared Lesher.


In our development program for the yz250 over the years, we have encountered every weak link you can imagine - and the std piston under hard use is prone to shattering and causing total engine loss.


Have a stock bike, no problem! Excellent stock replacment option.

Have a mod bike, even better!


Features Include:

  • This piston uses a special forging unique to our durability and performance needs
  • Ring pin pinned on centerline/6 oclock position for increased durability and ability to improve the B transfer ports not allowed by stock ring pin location
  • Single Ring for reduced friction, increased power
  • Special size for hard pro usage
  • Teflon coated skirt for last line of protection
  • Special dome and ring land, underside coataing for maximum durability
  • Saves nearly 10 grams from OEM for reduced vibration and improved rpm ability
  • Signature series Jared Leshar laser etched in the dome
  • 412 in the coating on intake side - don't worry - helps retain oil in those areas.


Support the privateer effort of Jared with every purchase!

Shop

KTM SX 85 2013-2025 - Billet Connecting Rod

$299.95

Take your KTM 85 engine to the next level with our billet connecting rod — engineered to deliver twice the strength of the OEM connecting rod. Made from premium billet aluminum, this rod is not only lighter and stiffer, but built to withstand the rigors of aggressive riding and racing.


Featuring high-quality, high-speed bearings, it ensures smooth, reliable operation even at extreme RPMs. Manufactured with high precision tolerances, this connecting rod guarantees a perfect fit and long-lasting reliability, reducing engine wear and improving performance.


Upgrade to a connecting rod that combines strength, weight savings, and precision engineering — designed to keep your KTM 85 running harder and longer.

Shop

Husqvarna TC 85 2013-2025 - Billet Connecting Rod

$299.95

Take your Husky 85 engine to the next level with our billet connecting rod — engineered to deliver twice the strength of the OEM connecting rod. Made from premium billet aluminum, this rod is not only lighter and stiffer, but built to withstand the rigors of aggressive riding and racing.


Featuring high-quality, high-speed bearings, it ensures smooth, reliable operation even at extreme RPMs. Manufactured with high precision tolerances, this connecting rod guarantees a perfect fit and long-lasting reliability, reducing engine wear and improving performance.


Upgrade to a connecting rod that combines strength, weight savings, and precision engineering — designed to keep your Husky 85 running harder and longer.

Shop

Billet VHM 112cc Stroker Crank with Billet Lightweight Rod - TC 85/105/112

$1,350.00

Husqvarna 112cc Billet Stroker Crankshaft - 52.7mm stroke


A completely new manufactured, precision toleranced billet crankshaft to turn your Husky 105cc engine into a 112cc engine.


These cranks are made to the tightest spec to insure a high quality crank. This is shown as the run out is within 0.01mm causing less vibration and smoother engine operation.


As fast as the 112cc engines are when put inside a bike designed for 85cc, the engine can be very hard to handle with a very narrow feeling power band. We have optimized the inertia factor to provide great performance, power character, and vibration characteristics.


This is a new billet product not an OEM crankshaft that is modified. Many modified cranks can not be trued perfectly, and due to the modification process will loose their true after a few hours of run time, resulting in vibration and loss of reliability.


VHM crankshafts are made of high quality, high strength steel which has undergone custom heat treatment which makes the crankshaft stiffer and resistant to bending and wear.

The cranks webs are CNC machined and ground to precise dimensions which results in a much longer performance and the crankshaft can also be overhauled many times.


This crankshaft adds our high performance lightweight, high strength billet connecting rod kit. Manufactured in Italy from an aerospace grade shop, the steel is nearly 2 times stronger than std rods.


This crankshaft can be used with a standard 85 cylinder to give 91.5cc or combined with the 105cc Kit to make a true super mini of 112cc.


VHM PART # AK20227 with our billet Connecting Rod Kit

Shop


Our Mission

-We specialize in providing the best product, personalized attention, and customer service in the business.  Customer satisfaction and support is our highest priority.  We want to earn your business then keep it for years to come.
-HP is very passionate about building world class race engines.  Our two strokes lead the way in technology and performance and our four stroke research and development pushes the term state of the art to a new level for motocross.  Our titanium fur stroke rod program, billet two stroke rods, custom pistons and crankshafts, and elite cylinder head porting have led the pack for years.  Improvement is an every day thing in the racing world - lead the way or get left behind! 
-We've built bikes and products for people all over the world.  If you want the bike of your dreams, or need a modification performed, don't hesitate to contact us.  International shipping is no problem!


​Contact

CONTACT INFO:
​Phone   512-481-2355
Email  ​ h[email protected]
Shipping Address   4707 Youngsford Road  Marion, Texas 78124

Work Order Form

Your browser does not support viewing this document. Click here to download the document.

How to Ship Your Engine

Your browser does not support viewing this document. Click here to download the document.

Services

Two Stroke Engine Mods
Four Stroke Engine Mods
Suspension Mods
Engine Repair and Service
Dyno Testing and Tuning
EFI tuning and Mapping
Carb Tuning
Parts and Accessories
Race Gear and Apparral
Race Fuel
Flow Bench Testing

Company

About
Jobs and Careers
Rider Support
​

Support

Contact
FAQ
Terms of Use
© COPYRIGHT 2015. ALL RIGHTS RESERVED.