Incredible RM125 Two Stroke Dirt Bike Rebuild from Start to Finish

Published at : 23 Dec 2025

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I am proud to present the project I have been working on for the last 6 months: a 2003 Suzuki RM125 2 stroke. I bought this bike in boxes last year from a 13 year old. He tore it apart with hopes to rebuild it and became overwhelmed.

This is the most proud I have been of a bike build project. It performs much better than a stock RM125 from 2003. I focused on making improvements to the bike where it was lacking. This includes upgraded suspension, brakes and engine components, along with many other upgrades from incredible sponsors. I plan to put some serious hours on this Suzuki this summer!

Below are links to the companies who supported this build as well as my social media and parts and tools I used during this build. I earn commission on part and tool purchases when you use my links, so I appreciate the support!

Leave a comment with your thoughts on the build. Like and subscribe if you want to see more builds like this!

MY LINKS

Instagram: https://instagram.com/kincadepavich
TikTok: https://www.tiktok.com/@kincadepavich
PUSH Apparel: https://pushdalimit.com/shop

BEATS

All beats used in this video were created by my good friend Chandler Bouldin exclusively for this build video!
https://linktr.ee/ChandlerBouldinBeats

TOOLS USED

Bench buffer: https://amzn.to/3O11Rlj
Crank puller: https://amzn.to/3jxiQxu
Crankcase splitter: https://amzn.to/3Ju23WP
Cutch holder: https://amzn.to/3uuMZ6W
Impact screwdriver: https://amzn.to/3uO2Uh3
Impact wrench: https://amzn.to/3O2mHAK
Pressure washer: https://amzn.to/3EnJxi3
Pryme cleaning wheels: https://prymemx.com/?ref=push
T-handles: https://alnk.to/4fLTbVm
Tire irons: https://alnk.to/cHIgh4G
Truing stand: https://amzn.to/3EWbWfd

COMPANIES THAT MADE THIS POSSIBLE

Dupli-Color
Website: https://duplicolor.com
Instagram: https://instagram.com/duplicolorauto
YouTube: https://www.youtube.com/duplicolortv
Dupli-Color is a paid sponsor of this video.

VHT
Website: https://vhtpaint.com
YouTube: https://youtube.com/vhtpaint
VHT is a paid sponsor of this video.

Pryme MX
Referral Link: https://prymemx.com/?ref=kincade
Instagram: https://instagram.com/prymemx

Phathead Racing
Website: https://phatheadracing.com
Instagram: https://instagram.com/phatheadracing

Millennium Technologies
Website: https://www.millennium-tech.net
Instagram: https://www.instagram.com/millenniumtechnologies

Pro X
Website: https://www.pro-x.com/
Instagram: https://www.instagram.com/prox_racing_parts

Wiseco
Website: https://wiseco.com
Instagram: https://www.instagram.com/wisecopistoninc/

Powder Coating of Montana
Website: https://powdercoatingofmontana.com
Instagram: https://instagram.com/powdercoatingofmontana

Greg Hitchko
Instagram: https://instagram.com/greghitchko
YouTube: https://youtube.com/greghitchko

DeCal Works
Website: https://decalworks.com
Instagram: https://instagram.com/decalworks

Shinko Tires
Website: https://shinkotireusa.com
Instagram: https://instagram.com/shinkotires

Dirt Tricks Sprockets
Website: https://dirttricks.com/
Instagram: https://www.instagram.com/dirttricks

MX Tech Suspension
Website: https://mx-tech.com
Instagram: https://www.instagram.com/mxtechsuspension

Myler's Radiators
Website: https://motorcycleradiators.com

Fast Metric
Website: https://fastmetricfasteners.com
Instagram: https://instagram.com/fastmetric

IMS
Website: https://imsproducts.com
Instagram: https://instagram.com/imsproducts

Clarke Racing
Website: https://clarkemfg.com

Excel
Website: https://excel-rim.com
Instagram: https://instagram.com/rk_excel

TCR Anodizing
Website: http://wheellacing.com

CHAPTERS

0:00 Engine Teardown
2:41 Chassis Preparation
4:47 Seat Cover
5:14 Wheel Teardown
6:18 Engine Rebuild
10:56 Chassis Assembly
14:31 Suspension
16:18 Ignition Cover
17:08 Cooling and Exhaust
18:37 Graphics
19:49 Brakes
20:58 Lacing Wheels
23:11 Finishing Touches
24:07 Completed RM125
25:13 First Start