Keefer, Inc. Tested

2025 Kawasaki KX250 Mods That Work

The 2025 Kawasaki KX250 is a lot different feeling on the track when comporting it to the 2024 version. The 25’ KX250 has a smoother engine character down low and is a little stiffer in the chassis. On the dyno the numbers between the 24 and 25 KX250 actually favor the new bike but on…

ByKris Keefer13 hours ago0Comments

Bike Brands Kawasaki Keefer Tested Podcasts

RMATVMC Keefer Tested Show #436: 2025 Kawasaki KX450SR Race Test With Gary Sutherlin

http://media.blubrry.com/keefer_tested/pulpmx.com/podcasts/250701_keefer.mp3 We gave Gary Sutherlin our 2025 KX450SR to race the vet weekend up at Mammoth Mountain MX so we ring him up to go over the details of the build as well as the race. What did Gary do to the bike? How was the durability of the KX450SR? Did it have enough power up…

ByKris Keefer1 day ago0Comments

Bike Brands KTM Yamaha

Lap Time Comparison (YZ450 vs. KTM 350 SX-F)

ByKris KeeferJuly 2, 20250Comments

Exhaust Hard Parts Performance Triumph

FMF 4.1 Muffler System For Triumph TF-450 RC Edition

The Triumph TF450-RC Edition is the newest 450 motocross machine, but I have had A LOT of time on this bike in stock form and with some mods done like this FMF 4.1 muffler system. In stock form the TF450-RC Edition has a smooth low end power with a wide mid to top end but…

ByKris KeeferJune 30, 20250Comments

Keefer Tested Podcasts

RMATVMC Keefer Tested Show #435: Mammoth MX and Remembering Aidan Zingg

http://media.blubrry.com/keefer_tested/pulpmx.com/podcasts/250630_keefer.mp3 The family and I sit down to share stories about a great young man and how he impacted our lives. If you knew Aidan you already know but if you didn't this show will speak about who he was as a person and how he held a special place in our hearts.

ByKris KeeferJune 29, 20250Comments

Bike Brands Kawasaki

2025 Kawasaki KX450SR Baseline Suspension Settings

The 2025 Kawasaki KX450SR is a much faster version of standard KX450 and feels a little stiffer due to the valving and higher oil level (4cc’s) in the forks. With the slightly stiffer suspension settings of the SR we were looking for more tracking ability as well as comfort to make the SR feel a…

ByKris KeeferJune 29, 20250Comments

Bike Brands Bolt-Ons Hard Parts Kawasaki Suspension

FCP Engine Mounts (2025 Kawasaki KX250)

While I am navigating this amateur motocross thing with my son Aden, I also try give him the best parts I am able to without breaking my bank account. Yes, we do get a lot of stuff for free but I also spend a lot of money. Sure, I don’t spend as much money as…

ByKris KeeferJune 25, 20250Comments

Bike Brands Yamaha

Riding Max Vohland’s YZ250F Hand Brake

ByKris KeeferJune 23, 20250Comments

Keefer Tested Podcasts

RMATVMC Keefer Tested Show #434: The Club MX Experience

http://media.blubrry.com/keefer_tested/pulpmx.com/podcasts/250622_keefer.mp3 Ever wondered what it's like to ride the Club MX facility? What about how it's ran? Is it the best motocross training facility in the United States? Listen as Aden and Kris Keefer talk about their experience visiting/riding the Club MX grounds.

ByKris KeeferJune 23, 20250Comments