Keefer, Inc. Tested

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 Keefer13 hours ago0Comments

Bolt-Ons Exhaust Hard Parts Honda Performance

Tested: Yoshimura RS-12 Full Titanium System

I mean if you have a Honda CRF450R, it’s almost illegal NOT to run a Yoshimura. No, but seriously, Yoshimura does make one of the best looking Honda mufflers in existence. Yoshimura quality is also second to none and when you bolt on a Yoshimura, you know it’s not going to be a nightmare. We…

ByKris Keefer24 hours ago0Comments

Bike Brands Bolt-Ons Hard Parts Yamaha

Yamaha YZ450F Flywheel Weights Tested

Optional Yamaha YZ450F Flywheel Weights Tested

ByKris Keefer3 days ago0Comments

Keefer Tested Podcasts Triumph

RMATVMC Keefer Tested Show #456: 2026 Triumph TF 450-X Review

http://media.blubrry.com/keefer_tested/pulpmx.com/podcasts/251112_keefer.mp3 The 2026 Triumph TF 450-X does have some small updates so in this episode we go over those changes as well as talk about where this bike shines and where it needs some help. With one of the best chassis in class, this British machine could be a weapon for someone looking to have a…

ByKris Keefer3 days ago0Comments

Bike Brands Yamaha

2026 Yamaha YZ450F Vet Masters Race Build

ByKris KeeferNovember 14, 20250Comments

Bolt-Ons Hard Parts Motocross Performance

Ride Engineering Pulse Replacement Rotor

If you’re looking for a 270mm replacement rotor for your Yamaha or Kawasaki or if you want to go oversize on your Honda, KTM, Triumph, Beta, Gas Gas or Husqvarna, Ride Engineering has an inexpensive option for you. Ride Engineering's Pulse Rotor kits are 10mm larger than stock and made from a special grade stainless/iron…

ByKris KeeferNovember 11, 20250Comments

Keefer Tested Podcasts

RMATVMC Keefer Tested Show #455: Honda CRF450R Dream Build and Endurocross Talk w/Cody Webb

http://media.blubrry.com/keefer_tested/pulpmx.com/podcasts/251110_keefer.mp3 In this mash up show we discuss our latest Honda CRF450R build with Eddie Laret and also get Cody Webb on the phone to talk about his Endurocross series as well as his Yamaha YZ250F big bore race machine

ByKris KeeferNovember 11, 20250Comments

Honda

How To Make A Dream Honda CRF450R

ByKris KeeferNovember 9, 20250Comments

Motocross

Ducati Desmo 450 West Coast Review

ByKris KeeferNovember 9, 20250Comments