Kris Keefer

Why A KTM 250 SX-F FMF Megabomb Headpipe Is Better On A KTM 350 SX-F

I originally posted a photo of a KTM 250 SX-F FMF Megabomb headpipe mated to a KTM 350 SX-F 4.1 FMF muffler and my DM’s flooded with questions. Why does it do? Why stick the 250 headpipe on the 350? Normally when you purchase an aftermarket muffler system you usually get a smoother roll…

ByKris KeeferOctober 20, 20240Comments

Bike Brands Suzuki

2025 Suzuki RM-Z450 And 50 Years Of The RM

ByKris KeeferOctober 17, 20240Comments

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

2025 MX Gearing Guide

Even though we are not into 2025 quite yet, it is 2025 new bike season and we have been logging the hours on our 2025 motocross machines. I have spent a lot of time testing on the 2025 MX machines you see below. I (as well as a couple other members of our team) have…

ByKris KeeferOctober 16, 20240Comments

Bike Brands Honda

2025 Honda CRF250R Works Edition First Impression Video

ByKris KeeferOctober 14, 20240Comments

Bike Brands Honda

RMATVMC Keefer Tested Show #401: 2025 Honda CRF250R Works Edition Review

http://media.blubrry.com/keefer_tested/pulpmx.com/podcasts/241011_keefer.mp3 Keefer walks you through Honda's first Works Edition CRF250R and fills you in on the differences between the "R" and the "WE". Is the increased price tag worth it, can you feel the polished head work on the track, what exactly is "polishing" when it comes to head work as well as other tidbits about…

ByKris KeeferOctober 14, 20240Comments

Bike Brands Hard Parts Kawasaki Performance

2025 Kawasaki KX450 Optional ECU Map

Looking for a little more pulling power out of your 2025 KX450? Try this map below and see what you think. This should help pick up (recovery) out of corners as well as give you a little more torque feeling in 2nd and 3rd gears. This map will only work for the 2025 KX450 because…

ByKris KeeferOctober 11, 20240Comments

Bike Brands Honda

First Laps On The 2025 Honda CRF250R Works Edition

ByKris KeeferOctober 10, 20240Comments

Bike Brands Yamaha

2024-2025 Yamaha YZ250F Optional Power Tuner Map

Like we mentioned in show #400 of the RMATVMC Keefer Tested Podcast, this KEEFER TORQUEY FREE FEEL map will help engine de-cel feel (engine braking) as well as increase rear wheel traction out of corners with slightly less quick revving spool up. If you prefer a little more traction out of this map on late…

ByKris KeeferOctober 8, 20240Comments

Bike Brands Kawasaki

2025 Kawasaki KX250 and KX250X First Ride Impression

ByKris KeeferOctober 7, 20240Comments

Bike Brands Keefer Tested Podcasts Yamaha

RMATVMC Keefer Tested Show #400: 2025 Yamaha YZ250F Ride Impression

http://media.blubrry.com/keefer_tested/pulpmx.com/podcasts/241006_keefer.mp3 Yamaha didn't change much for on their YZ250F for 2025 but are those changes worthy of you purchasing a new bLU cRU over a 2024? Keefer walks you through Yamaha's changes, why they were made and how those changes come to fruition during production testing.

ByKris KeeferOctober 7, 20240Comments

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