Yamaha – 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 Keefer21 minutes ago0Comments

Bike Brands Gasgas Honda Husqvarna Kawasaki KTM Triumph Yamaha

2026 250 MX Baseline Suspension Settings

Honda CRF250R: (140-180 pounds) Fork: Spring Rate: 4.8N/m Height: Flush-3mm Compression: 9-10 clicks out Rebound: 11 clicks out Oil Level: Stock Shock: Spring Rate: 50N/m Sag: 105mm High Speed Compression: 1-1/3 Low Speed Compression: 8 clicks out Rebound: 8 clicks out Kawasaki KX250: (140-180 pounds) Fork: Spring Rate: 5.0 N/m Height: 3mm Compression: 7 clicks out Rebound: 8 clicks out Shock: Spring Rate: 54 N/m Sag: 105mm High Speed Compression: 2.5 turns out Low Speed Compression: 10…

ByKris KeeferJune 10, 20260Comments

Yamaha

2027 Yamaha YZ250F Details

2027 Yamaha YZ250F Details/Specs

ByKris KeeferJune 3, 20260Comments

Bike Brands Bolt-Ons Gasgas Hard Parts Honda Kawasaki KTM Suzuki Triumph Yamaha

2026 250/450 MX Gearing Guide

I have spent a lot of time testing on the 2026 MX machines you see below. I (as well as a couple other members of our team) have went back and forth on several bikes to see which gearing would be good for the average rider. I did the evaluations on tight clay based tracks…

ByKris KeeferMay 1, 20260Comments

Bolt-Ons Hard Parts Yamaha

RMATVMC Keefer Tested Show #473: Pro Circuit KX450 Stage One Build

http://media.blubrry.com/keefer_tested/pulpmx.com/podcasts/260327_keefer.mp3 Keefer and Pro Circuit team up to create a stage one engine build that gives the rider a noticeable amount of power on the track but still is smooth enough to keep an "easy to ride feel". What is involved into such a build? Is it comparable to an SR? Can you run pump fuel?…

ByKris KeeferMarch 30, 20260Comments

Gasgas Honda Husqvarna Kawasaki KTM Motocross Suzuki Triumph Yamaha

2026 450 MX Baseline Suspension Settings

For 2026, there wasn’t a lot of changes from the manufacturers so we checked on our 2025 settings to see if they were still valid and tweaked if need be. This means for 2026, baseline clicker settings have changed only a little from the previous year. We made sure to spend some time on all…

ByKris KeeferMarch 30, 20260Comments

Honda Husqvarna Kawasaki Keefer Tested KTM Suzuki Triumph Yamaha

RMATVMC Keefer Tested Show #470: 2026 450 MX Non-Shootout (East Coast Edition)

http://media.blubrry.com/keefer_tested/pulpmx.com/podcasts/260308_keefer.mp3 Keefer talks about the 2026 450 MX moto media shootout results then applies those results to what these bikes feel like on east coast conditions. This episode also dives into the on going debate on if any of the new 450 MX machines feel different from Southern California (when comparing them to riding on the…

ByKris KeeferMarch 8, 20260Comments