Hard Parts - Keefer, Inc. Tested

Akrapovic Evolution System (2022 Honda CRF250R)

I had this initial impression of the Akrapovic Evolution muffler system as I was doing a Racer X Garage Build on the 2022 Honda CR250R. After riding with the system for some time I came away with some notes that you may have not known about the beautiful system for the new generation CRF250R. The…

ByKris KeeferMay 17, 20220Comments

Bolt-Ons Hard Parts KTM Performance

Twisted Development Exhaust Flange For 2022.5-2023 KTM 450 SX-F

The Twisted Development exhaust flanges are shaped differently than the stock OEM flange, which can change the engine character of the new KTM 450 SX-F. We went through several during testing and found out a size/shape that can actually enhance the low to mid range power character. Compared to the stock piece the TD Performance…

ByKris KeeferMay 5, 20220Comments

Bolt-Ons Kawasaki Motocross

Works Chassis Labs Engine Mounts: 2022 Kawasaki KX250

I am usually not one to switch up engine mounts too much, but I have tried some in the past that actually have made certain machines more compliant and friendlier to ride. Works Chassis Labs has been making engine mounts for a few years now and supply some of the teams you see in the…

ByKris KeeferMay 3, 20220Comments

Hard Parts Tires

Michelin Starcross 6 Medium/Soft Review

The Starcross 6 has incorporated Michelin's Adaptive Design that gives specific positioning of the tread blocks on three separate zones: central, intermediate and lateral associated with a specific shift of these zones. Michelin's single goal was to offer and exceptional grip behavior compromise for the front and exceptional grip/traction with longevity. Sounds like a dream,…

ByKris KeeferApril 26, 20220Comments

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

Rider Triangle Life: Helping You Find A Better Cockpit

Crossbar or no crossbar, half waffle vs. no waffle vs. full waffle and grip compound advice... How do you know if you’re a crossbar type of rider or a non crossbar type of rider? Maybe you don't care? Sometimes it’s just by what you feel is most comfortable but other times it’s off of feel. I use…

ByKris KeeferApril 21, 20220Comments

Tires

Rear Tire Sizing Questions Answered

I was suggested by a current top professional racer to try a 110/90-19 rear tire on my YZ450F recently. He was saying that he preferred it to a 120/80-19 on his 450 because he could cut down quicker in corners and had better initial lean in with the 110 sizing. This lead me down a…

ByKris KeeferApril 6, 20220Comments

Suspension Suzuki

RM-Z450 Race Tech Re-Valve

Editors Note: This is about as raw of an evaluation as we get here at Keefer Inc Testing. Preston Jordan is one of my long time friends that needed to get back into the sport. I enticed him with a 2021 Suzuki RM-Z450 and here we are. Preston is your average blue collar rider that…

ByKris KeeferApril 5, 20220Comments

Tires

Michelin Starcross 6 Introduction

ByKris KeeferApril 2, 20220Comments

Bolt-Ons Hard Parts

NuAxle Adjustable Offset Axle

Something that came across my desk the other day that I thought was interesting was the NuAxle Adjustable Offset Axle. The NuAxle allows you to adjust the steering and handing of your motorcycle with just a turn of the axle, using the indicating notch on the large end of the axle. The NuAxle comes with…

ByKris KeeferMarch 30, 20220Comments

Bolt-Ons Kawasaki

Flo Titanium Footpegs

There are many types of aftermarket parts that are easy to improve upon with stock motorcycles, but there are also some that are pretty damn good in production form (like the new 2022.5 KTM Factory Edition footpegs). Some people don’t realize how much goes into making a stock footpeg work so well, but trust me…

ByKris KeeferMarch 28, 20220Comments

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