Pro Circuit - Keefer, Inc. Tested

Pro Circuit Ti-6 Muffler System (2024 Yamaha YZ450F)

The Pro Circuit Ti-6 Titanium Exhaust System is constructed of titanium throughout the head pipe, mid pipe, and canister while the end-cap is carbon fiber. I wanted the Ti-6 system because I wanted to lose a little weight as the this version of the “6s” allows me to shed almost two pounds off of the…

ByKris KeeferJanuary 5, 20240Comments

Bike Brands Kawasaki

Go-Pro On Board 2024 Kawasaki KX450 Mesquite MX

ByKris KeeferJanuary 3, 20240Comments

Bike Brands Bolt-Ons Exhaust Hard Parts Kawasaki Performance

Pro Circuit Ti-6 Muffler System (2024 KX450)

Aftermarket muffler manufacturers rejoice! The 2024 Kawasaki KX450 has A LOT of room for improvement with its muffler system. The stock muffler is choked up and makes the KX450 feel somewhat lethargic for a 450. Yes, I know what you’re thinking.. “Kris, it’s a 450, how much power do we actually need”? You would be…

ByKris KeeferDecember 17, 20230Comments

Bike Brands Gasgas Husqvarna KTM

2024 Gas Gas/KTM/Husqvarna 250 Four Stroke Comparison

Written By: Gardner Tarlow Austrian triplets! Can you really go wrong? For 2024 all three of the Austrian bikes although different in color took on very similar personalities. For 2024 the Gas Gas MC250F is all new from its 2023 predecessor, and although all new for Gas Gas it’s basically the red headed triplet with two…

ByKris KeeferDecember 14, 20230Comments

Bike Brands Hard Parts Kawasaki

Top Mods For Your 2023 Kawasaki KX250

We've had a ton of time on more than one 2023 Kawasaki KX250 around these parts and have figured out some mods/tweaks that could help you prolong the fun out of yours. Some of these mods are for performance but most are for function/durability. WE have noticed that the 2023 KX250 is much friendlier to…

ByKris KeeferJuly 10, 20230Comments

Bike Brands KTM

Living With The 2023 KTM 125SX

Written By: Gardner Tarlow 125s, To Inject Or Not To Inject? When Kris offered to let me test the 2023 KTM 125 SX FI machine, I was more than stoked to get the opportunity to compare KTM’s new 125 FI to some other well carbureted 125s. With that being said, I would have been even more…

ByKris KeeferJune 26, 20230Comments

Bike Brands Bolt-Ons Exhaust Hard Parts Kawasaki Performance

2023 Kawasaki KX450 Pro Circuit Ti-6 Muffler System

When you think of muffler systems for the Kawasaki KX450, you think of The Pro Circuit Ti-6 muffler system. I have tested a lot of different mufflers for the KX450, but what does the Pro Circuit system bring to the table for the money? The PC Ti-6 system will set you back $1270.00 and will…

ByKris KeeferMay 15, 20230Comments

Bike Brands Bolt-Ons Exhaust Hard Parts Husqvarna KTM Performance

Pro Circuit Works Pipe and R304 Shorty Silencer (2023 KTM/Husqvarna 250/300)

I have been testing quite a few pipes/silencers for the 2023 KTM 250/300 as of late (FMF, Bills) and the Pro Circuit system is the latest that I have tried. The Works pipe and R304 Shorty silencer was tested on a recent Racer X Garage Build Husqvarna TC250 that I had the chance to ride.…

ByKris KeeferApril 6, 20230Comments

Bike Brands Kawasaki KiT News

2022 Kawasaki KX450SR

The Kawasaki KX™450 has long been the flagship model in the Kawasaki KX™ lineup of motocross motorcycles and is built with race-winning components to help propel Kawasaki riders to the top step of the podium. With decades of winning history, Kawasaki introduces the all-new limited edition 2022 KX™450SR. Previously only reserved for early Kawasaki factory racing machines, the “SR” or Special Racer naming convention represents the pinnacle of Kawasaki race bikes. The all-new…

ByKris KeeferOctober 5, 20210Comments

Bike Brands Bolt-Ons Exhaust Honda KiT Performance

Slip On Or Full Muffler System (2021 Honda CRF450/250R)

Some muffler questions that get sent to my email inbox usually look like, “which muffler is best for my bike? “Is a full system worth the money or can I just get away with purchasing a slip on”? “Is my stock muffler the best muffler option for me”? Instead of trying to keep answering some…

ByKris KeeferMay 19, 20210Comments

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