Tech – Keefer, Inc. Tested

2026 450 MX Recommended Chassis Lengths

I have been wanting to do this for quite sometime as chassis lengths are important to how your motorcycle reacts on the track. Sometimes we just go about our day, slap a different size sprocket on or cut our new chain a different length without hesitation. However, when you do that it can/does affect how…

ByKris Keefer1 day ago0Comments

Garage Tech

VP Racing Fuels (ProCar Blend vs TT blend)

Written By: Victor Guerrero At Keefer Inc Testing we have talked many years about VP racing fuels, but this one is not something we have ever written about. Some of our testers have alternate hobbies to occupy their time away from work and motocross. That hobby involves radio controlled cars that have 3.5cc engines in…

ByKris Keefer3 days ago0Comments

Motocross Training

The Myth of Greatness

By Seiji Ishii Ken Roczen admitting he battles severe anxiety may have helped more riders than his winning the championship. Fresh off winning his first AMA Supercross Championship, Ken Roczen stood on stage emotionally drained. Not hyped up. Not pretending to be untouchable. Not giving a polished speech about confidence and momentum. He looked exhausted, and honestly,…

BySeiji IshiiJune 3, 20260Comments

Tech Training

Data Isn’t the Driver. You Are.

By Seiji Ishii Self-monitoring tools can help you train better—or they can stall you out. The difference is how you react to what they tell you. The Device Isn’t the Problem It seems like everyone is running something now—Whoop, Garmin, HRV, sleep scores, diet tracking. None of that is the issue. If anything, it’s useful. You’ve got…

BySeiji IshiiMay 11, 20260Comments

Tech Training

The Day is a Terrible Scoreboard

By: Seiji Ishii I’m dealing with this right now. I pushed through the weekend because I wanted to feel like I gave everything I had, and now I’m sitting here sick. That wasn’t bad luck. That was the cost. If you use the day as your scoreboard, you’ll make bad decisions. You’ll take a session that was supposed…

BySeiji IshiiApril 26, 20260Comments

Suspension Tech Trackside

Cheat Code To Diagnosing Suspension Woes

ByKris KeeferApril 20, 20260Comments

Tech Trackside Training

Coach’s Cut: Discipline vs. Desire

Written By: Seiji Ishii Why training based on how you feel can quietly wreck your riding. The disciplined rider does not train based on desire. They train based on condition. That sounds straightforward until you look at how training decisions actually get made during the week. It’s easy to blur the line between what sounds good that…

BySeiji IshiiApril 7, 20260Comments

Tech Training

It’s Not Your Fitness, It’s Your Head

By Seiji Ishii If your attention is in the wrong place, it doesn’t matter how fit you are. There’s a point where more physical work stops being the answer. Not because fitness doesn’t matter, but because something else starts to matter more—where your attention goes when you’re riding. Many riders are putting it in the wrong…

ByKris KeeferMarch 23, 20260Comments

Tech Trackside

Coach’s Cut: It’s Not the Bike

Written By Seiji Ishii Riders love bike upgrades. That’s probably why you’re here. You got a part in the mail, and you’re fired up. Surely this throttle tube is the key. As you shove a Totino’s pizza pocket down your gullet and wash it down with a Coke, you head straight to the garage to install…

BySeiji IshiiMarch 12, 20260Comments

Tech Training

Coach’s Cut: You Got “Strong.” But Did You Get Faster?

Stacking more plates every week only builds one lane of performance — and motocross doesn’t live in one lane. By Seiji Ishii Just lifting weights and trying to lift more all the time isn’t the whole picture. That’s just force development. The other lanes are tissue tolerance, power (speed of force development), and durability (submaximal contractions over…

BySeiji IshiiFebruary 18, 20260Comments