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Rock Diesel Of Milton, L.L.C./Milton Motorsports

"One Stop Diesel Shop!!"

About Us

Rock Diesel of Milton, LLC is a full service diesel performance and repair shop in Milton, Wisconsin. We understand your passion for diesels, and we’re here to serve you! Our technicians are performance enthusiasts with several years of experience.

We offer services for turbos, tuning, injectors, transmissions, exhaust and intakes, and more! Feel free to contact us for information on additional services. We are open Monday through Friday from 8:30 am until 5:30 pm.

There are several ways to stay in touch and up-to-date with the latest and greatest at Rock Diesel. Check out our News section for the most current happenings at Rock Diesel of Milton and be sure to Like us on Facebook for access to giveaways and special events! We also have a YouTube channel for exhilarating diesel videos.

Areas Served

Southern Wisconsin | Northern Illinois

Our Professional Associations

Milton Chamber of Commerce

Our Certifications

Certified Mechanic

What We Offer

Our Specialties include:

Motorsport Repair

Our Services include:

Diesel Repair
Transmission
Tuning
Injectors
Exhaust and Intakes
Turbos
Pull trucks
Fully Built Motors
Chip Diesel Motors

Our Brands include:

Duramax
Dodge
Ford

Our Products include:

Truck and Motorsport Parts and Accessories
Clothing

Testimonials

On 7/19/2024 Jaylyn Volkey had this to say:
Wow. All I can say. We have owned our 6.0L for 3 years and they got this problem child of a truck figured out. Best it’s ran yet. Major thank you.

On 6/2/2024 jesse miller had this to say:
Unfortunately my truck broke down on the interstate 1500km from home at the end of a friday... Rock diesel wasn't able to repair me in such short notice, but they were knowledgeable with my diesel problem and helped diagnose a solution over the phone. They were able to recommend a local shop that was able to help with the repair. This helpful service is hard to come by!! Thank you for taking the time to get us back on the road!!

On 3/6/2024 CLAIRE EITHUN had this to say:
have nothing but good things to say!

On 10/20/2023 Mike Addington had this to say:
Great Work highly recommend

On 7/7/2023 Three Foot had this to say:
Great guys.

Contact Us

Rock Diesel Of Milton, L.L.C./Milton Motorsports
4365 Milton Avenue Janesville, WI 53546
Phone: (608) 743-9100
Secondary: (608) 868-7199
Email: ryan@rock-diesel.com

Parking On-Site

Where To Find Us

Payment Types Accepted

Visa, MasterCard, American Express, Discover, PayPal, Personal Checks, Debit Cards, Cash

Our Hours

Holiday Hours May Vary. Please Call For Details.

Monday: 8:00 AM - 5:00 PM
Tuesday: 8:00 AM - 5:00 PM
Wednesday: 8:00 AM - 5:00 PM
Thursday: 8:00 AM - 5:00 PM
Friday: 8:00 AM - 5:00 PM