640 Reviews
Tell people what you think
Chris Andrews
· October 5, 2017
I had a CR125 cylinder 80 over and ported and Polished ordered two top end kits with it get it back got it back together Power valves hit piston and ring only had about an hour on the motor for in they would not fix it or replace my parts said it was my fault very dissatisfied with this company I had dealt with other places had the same thing happen twice they replaced everything spend a lot of money to get this motor Done. The issue here was Powell valves were not shaved down far enough after the heat got to him when they swell up is when they hit the piston and ring. See More
Todd Phillips
· September 30, 2017
Exceptional service from the moment I set my order up roght up to shipping it back to my door. Packing was superb and everything came back better then expected. Would highly recommend!! Will be sendin...g all my engine work to them that I can't accomplish myself. See More
Ross Smith
· September 16, 2016
I have used these guys for a few months via my motorcycle shop. I have to admit, the work they do is nothing less than exceptional. Attention to detail and level of service that I have not found anywh...ere else. I rate them 10 stars.

Pro moto performance.
See More
Gregg Boyette
· November 11, 2017
They know this business. Cylinder stays strong. Beautiful work every time.
Jason Talbert
· May 18, 2016
I had sent a cylinder that I thought couldn't be fixed. But these guys welded it and re coated it for me and it turned out looking flawless and works awesome! Great people. Polite, very informative, a...nswered every question I had and it was a pretty quick turn around. I will DEFINITELY be sending more work to them! See More
Dylan Gillespie
· July 5, 2015
Absolutely phenomenal my 99 cr250 cylinder was absolutely mangled received back and the workmanship is incredible you would have thought this part came off the assembly line 16 years ago would recomme...nd them to anybody See More
Bernie Broderick
· April 15, 2017
Wonderful work - professional staff! We searched around an d not only were they highly recommended, they were competitively priced and super friendly
Chuck Sennett
· September 25, 2016
When you can fix a head like that like the BMW that's badass and I would like to know how I can get a job and work for your company
Steve Cooper
· February 18, 2017
It's been years since I've used this company and I want to send an "Atta Boy" to all the guys and gals that I contact with. I will continue from here on out to use yall for the professionalism yall ha...d and especially to Jeff for his itemized and detail description of the work needing to be performed. Yall saved my customer a bunch of money on repairs verses the purchase of new parts. Thank you again from Texas....
See More
Joshua Henson
· June 26, 2017
Did wonderful work on my 98 yz125 cylinder and head! I'll have it back together and riding tomorrow!
Jack Higgins
· March 4, 2017
Really fast turnaround time and exceptional quality on the bore and plating job for my cylinder.
Jerry Martin
· January 29, 2015
They are good to work with and true to their word. They will always have my business!
Sue Lehnen
· November 28, 2014
just got my cylinders back and they were better than expected even. I have done work with millennium throughout the years and every time I am impressed. THANK YOU VERY MUCH!
Dillon Johns
· October 1, 2015
Just got my new cylinder in for my 99 Rm250 and put it back together. Can't wait to give it a test ride. I'm sure it will run great now.
William Simanton
· February 12, 2016
Thank for the great service low cost and excellent work!
Ben Gerjets
· January 10, 2014
Just received my replated cylinder and new piston kit back for my 87 CR250R restoration project...very impressive work!
Josh Bladen
· May 9, 2016
Fast service and do a wonderful job will be sending any work I need done there
Drew Currier
· March 23, 2017
Great clean work very happy with cylinder service!
Kyle Noell
· December 24, 2015
You guys did an awesome job with my cylinder. Thanks for everything guys!
Ryan Morris
· June 10, 2015
Great quality, easy to deal with, good turn around time
A little late on the #DynoTuneTuesday, so this week it's #DynoTuneWednesday! 2010 Harley-Davidson FLH with our Revolution Performance 107" bolt-on big bore kit, Revolution Performance Stage 2 CNC Cylinder Heads, T-MAN PERFORMANCE .590 cams, DandD Exhaust Fat Cat and tuned with Dynojet Research Inc. . Contact us today to get more information about our engine build services, big bore kits and dyno tune services!
Good luck this weekend Kyle Wyman Racing at Road America!
There is still time left to win the bike of your dreams! Click the link below to sign up. Winner of the 2017 Husqvarna TC 300 big bore will be selected Monday July 31st!

Click below to watch our video on combustion chamber repair! Give us a chance to save your head before you throw it away!

Image may contain: text

M-Spec CNC Ported 4-Stroke Head Modifications produce more power with zero negative effect on reliability. Each head design has under gone extensive testing in flow bench simulation, on the dyno, and on the race track. Once the port design is optimized, the port is then digitized so that we can reproduce the same perfect port every time. We offer solutions for big bore and standard bore applications for Off-Road, MX, ATV/UTV, Harley, and Sportbike applications.

No automatic alt text available.

2016 Victory Motorcycles Vision with our Revolution Performance 117" bolt-on big bore kit up on our dyno!!

It looks like you may be having problems playing this video. If so, please try restarting your browser.
Revolution Performance

2016 Victory Motorcycles Vision on our dyno! Revolution Performance 117” bolt-on big bore kit, Lloydz Motor Workz cams, Freedom Performance Exhaust Inc true duals exhaust and tuned right here in house with Dynojet Research Inc. power vision!

M-Spec Products and Performance Services! See what we can do to help you better your ride!

It looks like you may be having problems playing this video. If so, please try restarting your browser.
M-Spec Products and Performance Services
Millennium Technologies

What is M-Spec? Watch to learn more about how Millennium Technologies M-Spec Products and Performance Services can help you! #MSpec

Image may contain: motorcycle
Revolution Performance

2012 Harley-Davidson XL1200 Sportster Forty-Eight set up with our 1250 bolt-on big bore kit and our stage 2 CNC ported head service! #TeamRP #BigBoreEverything ...FEULING Parts Bassani Xhaust Dunlop Legend Suspensions RC Components

Check back later this week for a full build sheet on this hot rod!

See More

Racer X Illustrated article on a 2014 Yamaha Motor YZ250 rebuild with a replated cylinder back to OEM stock by Millennium Technologies! Check out the article and video below:…/racer-x-films-2014-yamaha-yz250-b…

#TeamMT #CylinderReplate #YZ250

No automatic alt text available.

Ok...I can get used to this!

It looks like you may be having problems playing this video. If so, please try restarting your browser.
Posted by Grown Men Stuff
Grown Men Stuff

Amazing things happen when you put a Hayabusa 1300cc engine into a jetski

2 Strokes are the right amount of strokes. #ringdingding #braaaaappp

Image may contain: motorcycle and outdoor

TransWorld Motocross article on a 2004 Suzuki RM125 rebuild with a Millennium Technologies replated cylinder back to OEM stock!…/2004-suzuki-rm125-rebui…/

#TeamMT #CylinderReplate

Image may contain: motorcycle and outdoor