Bolt-Ons – Keefer, Inc. Tested

Twin Air Powerflow Kit (Honda CRF450R)

The Twin Air PowerFlow kit is a lightweight aluminum cage that is designed to replace the stock CRF backfire screen and filter system to improve performance by allowing more airflow. By installing the Twin Air PowerFlow kit, we eliminated the backfire screen, allowing more air to flow into the intake system. Installation was easy as: 1.…

ByKris KeeferSeptember 25, 20250Comments

Bike Brands Bolt-Ons Hard Parts Yamaha

Works Connection Aluminum Offset Footpeg Mounts (Yamaha YZ250F/450F)

The Yamaha YZ250F/450F cockpit still just feels a little tight to me. I still feel cramped even though Yamaha changed their footpeg offset on the YZ450F in 2023 and in 2024 the YZ250F followed. In those years Yamaha opened changed the offset to -5mm down and -5mm back but Works Connection has since introduced their…

ByKris KeeferJuly 10, 20250Comments

Bike Brands Bolt-Ons Exhaust Hard Parts Kawasaki Performance

2025 Kawasaki KX250 Mods That Work

The 2025 Kawasaki KX250 is a lot different feeling on the track when comporting it to the 2024 version. The 25’ KX250 has a smoother engine character down low and is a little stiffer in the chassis. On the dyno the numbers between the 24 and 25 KX250 actually favor the new bike but on…

ByKris KeeferJuly 7, 20250Comments

Bike Brands Bolt-Ons Hard Parts Kawasaki Suspension

FCP Engine Mounts (2025 Kawasaki KX250)

While I am navigating this amateur motocross thing with my son Aden, I also try give him the best parts I am able to without breaking my bank account. Yes, we do get a lot of stuff for free but I also spend a lot of money. Sure, I don’t spend as much money as…

ByKris KeeferJune 25, 20250Comments

Bike Brands Bolt-Ons Clutch Hard Parts KTM

Rekluse Auto Clutch Review (2025 KTM 350 XC-F)

Written/Tested By: Gardner Tarlow I’ve been stoked to ride the 2025 KTM 350XCF for a good part of our SoCal off road season. I’ve had plenty of rides on my typical single track and favorite open desert places as well as most of the SoCal motocross tracks. The 350XCF has continued to perform well and has…

ByKris KeeferMay 13, 20250Comments

Bike Brands Bolt-Ons Exhaust Hard Parts Performance Suspension Yamaha

Top Chassis/Engine Mods For 23-25 Yamaha YZ450F

ByKris KeeferApril 22, 20250Comments

Bolt-Ons Hard Parts Keefer Tested Podcasts

RMATVMC Keefer Tested Show #425: Handlebar Bends For Dummies

http://media.blubrry.com/keefer_tested/pulpmx.com/podcasts/240417_keefer.mp3 Keefer takes you through some of the best Renthal bends for your new MX machine as well as gives you explanations on why each dimension fits your size as well as your bike the best. If you want the best rider triangle for your type of riding, listen to this show and learn.

ByKris KeeferApril 21, 20250Comments

Bike Brands Bolt-Ons Exhaust Hard Parts Kawasaki Performance

Top 5 Mods For The 2025 Kawasaki KX250

ByKris KeeferApril 9, 20250Comments

Bolt-Ons Hard Parts Motocross Triumph

Hinson Replacement Clutch Pack (Triumph TF-450 RC Edition)

I have been logging a lot of hours on the Triumph TF-450 and have noticed the clutch on the British machine is a little too light and vague when under some average abuse. Triumph wanted to go with a lightweight clutch lever pull feeling and they succeeded but it doesn’t come with a little bite/grab.…

ByKris KeeferApril 2, 20250Comments

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

2025 Optional Renthal Handlebar Bends For Your Bike/Size

We are back for 2025. Going all detailed on bar specs! When it comes to handlebars, it is very particular between each rider. However, I have and 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 I…

ByKris KeeferMarch 28, 20250Comments