Hard Parts

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How To Save Your Subframe On Your 2019-2021 Kawasaki KX450

By: Matt Sirevaag (AKA Vaaaaaaag) You just took ownership of a new KX450 and you want to change the engine characteristic with a new exhaust. However when listening to Keefer rant on the Pulp MX Show about A-Ray giving away mufflers like he’s Oprah on a Christmas special has you hesitant. You may wonder why…

ByKris KeeferOctober 8, 20200Comments

Bike Brands Bolt-Ons KiT Yamaha

FLO Motorsports Lowering Footpegs (Yamaha YZ450F)

If there is one thing I can complain about on the Yamaha YZ450F, it would be that the ergos are a little weird compared to the other brands. When sitting, the Yamaha feels like the pegs are high and not far enough back for my 6’0 long legged frame. I scoured the land for a…

ByKris KeeferOctober 7, 20200Comments

KiT Performance Tires

Tire Pressure Settings Bible

Riding several tires as well as compounds over the years, I decided to write some of the optimal tire pressures that I felt worked the best in a variety of conditions. Here are five major brands and their pressures, that I thought could be some benefit to you. If you're wondering what PSI to run…

ByKris KeeferAugust 25, 20200Comments

Bike Brands Bolt-Ons KiT Performance Suzuki

Ride Engineering 22mm Triple Clamp and One Piece Bar Mount (Suzuki RM-Z450)

Ride Engineering’s 2020 Suzuki RM-Z450 22mm offset triple clamps (stock is 21.5mm) are anodized black, are 4.5 ounces lighter than stock and grip the fork 12mm higher up than the stock clamp. The one-piece bar mounts feature 12mm posts instead of 10mm for much-needed additional strength. The bar mounts retain the stock height and can…

ByKris KeeferJuly 6, 20200Comments

Bike Brands Bolt-Ons Exhaust KiT Performance Suzuki

2020 FMF Factory RCT 4.1 Stainless Full System (Suzuki RM-Z450)

FMF has helped us on many builds and you may be wondering why do we use them so much? Well… A couple reasons are because FMF is a great American made company, they are easily accessible to us dumb media people and they actually care about the results of their product. If for whatever reason…

ByKris KeeferJune 25, 20200Comments

KiT Performance Suspension

Coppersmith Aero/Hybrid Fork

Coppersmith Racing Suspension has been around as long as I can remember and they have been mostly known for their Ohlins suspension set-ups. I stumbled across the Coppersmith Aero/Hybrid suspension kit for the WP AER air fork from the guys over at Racer X. If you’re on the fence about air vs. spring, the Coppersmith…

ByKris KeeferJune 17, 20200Comments

Bike Brands Bolt-Ons Exhaust Honda KiT Performance

Yoshimura RS-9T Stainless Full System (2020 Honda CRF250R)

The 2020 Honda CRF250R is much better off the bottom end than the 2018-2019 versions, but we wanted to test the latest full stainless Yoshimura RS-9T to see if it helped the stock Honda’s engine character at all. We were specifically looking for a little more RPM response and pulling power because the Honda is…

ByKris KeeferJune 10, 20200Comments

Bike Brands Bolt-Ons KiT KTM Performance Suspension

REP Knuckle For 2015.5-Up KTM Shock

As the hours keep ticking away on the 2020.5 KTM 450 SX-F Factory Edition test machine, I have been going through test parts like crazy. I have been testing the REP (Research Engineering Performance) re-valved WP XACT Pro Components and have good things to say about Mark’s work, but I wanted to get a little…

ByKris KeeferJune 2, 20200Comments

Bike Brands Husqvarna KiT Performance Suspension

Kreft Suspension Review (Husqvarna TE300i)

Written By: Michael Allen Let’s be honest, as riders we have all probably uttered these words to a suspension tuner, “I want it plush, but stiff”. I would imagine that every suspension guy has heard that phrase and grits his teeth every time he hears it. That is where Kreft comes in with their revolutionary…

ByMichael AllenMay 29, 20200Comments

Bolt-Ons KiT

Pro Circuit Aluminum Throttle Tube

Have mostly been a plastic throttle tube type of guy, but I have appreciated the toughness of an aluminum throttle tube when I have some medium to large sized crashes. The one thing I usually don’t like is the firmness of the aluminum throttle tube when landing as well as how big they feel in…

ByKris KeeferMay 25, 20200Comments

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