Yamaha – Keefer, Inc. Tested

Why Is The 2026 Yamaha YZ450F Winning A Lot Of Shootouts?

The Yamaha YZ450F underwent some chassis and engine changes in 2026 and it seems to be a hit in a lot of 2026 450 media shootouts. At the time this went out to you all, Yamaha has acquired three 450 Shootout wins (with more to come from what I have heard) from Swap Moto Live,…

ByKris KeeferDecember 18, 20250Comments

2026 Optional Renthal Handlebar Bends For Your Bike/Size

We are back for 2026. Going all geeked out and detailed on bar specs! When it comes to handlebars, I am a picky SOB. Oh and I am still am a big pain in the butt with a rider triangle. The height, width, rise, and position is very important to me between each bike that…

ByKris KeeferDecember 10, 20250Comments

Bike Brands Yamaha

FMF 4.1 RCT Muffler System For 2026 Yamaha YZ450F

ByKris KeeferDecember 9, 20250Comments

Bike Brands Kawasaki Yamaha

Modified Comparison: Yamaha Vs. Kawasaki

ByKris KeeferDecember 8, 20250Comments

Bike Brands Performance Yamaha

2026 Yamaha YZ450F Optional Yamaha Power Tuner Map

If you had a 2024-2025 Yamaha YZ450F and then purchased a new 2026 YZ450F you may notice a little more engine braking with the new '26 bLU cRU machine. For me, it made the new Yamaha difficult to roll corners as it upset the chassis at times (once the suspension was broken in). Relaxing the…

ByKris KeeferNovember 20, 20250Comments

Bike Brands Bolt-Ons Hard Parts Yamaha

Yamaha YZ450F Flywheel Weights Tested

Optional Yamaha YZ450F Flywheel Weights Tested

ByKris KeeferNovember 17, 20250Comments

Bike Brands Yamaha

2026 Yamaha YZ450F Vet Masters Race Build

ByKris KeeferNovember 14, 20250Comments

Yamaha

The Weekend Race Set Up: World Vet

After every race I have a template and usually fill it out for my personal use for future testing. No matter what race this template helps guide me to improve upon any bike that I may be racing. Below is a raw look at what I used at the 2025 World Vet race as well…

ByKris KeeferNovember 3, 20250Comments

Bike Brands Keefer Tested Podcasts Triumph Yamaha

RMATVMC Keefer Tested Show #453: Triumph TF-450 Vs. Yamaha YZ450F and Endurocross Talk

http://media.blubrry.com/keefer_tested/pulpmx.com/podcasts/251027_keefer.mp3 We went racing with two bikes to do a little comparison to see which modified version of each bike was better. We will dive into the Triumph and Yamaha 450s to let you know which one could be right for you. We then make a call to Max Gerston to talk a little Endurocross. Is…

ByKris KeeferOctober 27, 20250Comments

Bike Brands Bolt-Ons Hard Parts Performance Yamaha

Race Tech Airboot For 2024-2026 YZ250F

ByKris KeeferOctober 22, 20250Comments