Super easy to install. Look great on the bike ,and give me peace of mind that my footpegs won't rip out of the frame

I’ve intentionally waited until making it through the optional extended break-in period of 300 miles before writing this review. The sales and customer service experience from tip to tail was flawless. The product is dialed, the critical instructions are perfectly documented without going overboard on unnecessary details. If you are comfortable in tearing down a bike and opening it up, this kit will be a walk in the park. If you’ve never done that before but are mechanically inclined I still think it’s totally manageable if you take your time, use the Cyclepedia service manual and have the appropriate tools at hand.

Ari crushed it with this kit! I went with stage 3.0 and I live and operate the motorcycle at 9,300 feet so I was significantly down on power from the lack of air density. I can now rip highly technical Colorado Offroad single track trails and then get on the small local highway and cruise at 70 mph and even pass in 6th gear! Deleting the carbon canister on the tank vent also rid me of my issues with stalling after dumping the bike. It runs so smooth and the RS 12 exhaust is a perfect pairing for the motorcycle…adding power and a great tone without being “too” loud.

I’m a tinkerer at heart, which is one of the reasons I’ve loved this motorcycle. Unfortunately, Ari did such a good job I think the bike is finally complete. I guess there’s nothing left to do but ride 🤘😎🤘.

The peg protector on the kickstand side does not fit. There are existing bolts, preventing it from being installed properly. So for now, I only havethe right side on, so not exactly great.

UPDATE: Ari Henning stands by his products 110%! The peg protector is a tight fit on the kickstand side and can vary per bike. Ari informed me of this after hearing about my fitment issues. He customized one of the frame plugs by drilling it out to accept the peg bolt without need of a nut to fasten - as clearance was minimal. I appreciate his willingness to engineer this piece for my bike and didn’t charge me a dime.

My 300 is nearly kitted out and all that really remains to updgrade world be the big bore kit. I can tell you I will not hesitate to do this mod in the future knowing Ari has my back! Thanks again Ari!!

After reading about damaged frames, I inspected my bike and found that the footpeg mounts on the frame were bending enough that it crack the paint on the welded joint, so I ordered and installed Ari's footpeg supports.
They went on in minutes and certainly beef up the area. I've repainted the cracked paint and will monitor the area.

Great quality and design. Hopefully never needed but I think these braces can save the frame in the event of a hard fall.

I upgraded my ‘25 CRF 300 Rally using Ari’s list as a guide. I did all of the work myself except for having a shop install the springs and cartridges in the forks. The suspension and performance mods transformed my bike. I finally got out on a multi day camp and ride with some challenging sections and I am super happy with the stage 3.0 mods, suspension, tires, bars and grips.

As advertised. Bolt right up and provide good support. Thanks!

Easy install, very nicely made!
Thanks.

Fantastic invention I ride a lot of rocky trails, have a hairline crack on one side, delighted when I seen them advertised thank you!!

Very nice piece, snug fit, increased velocity, throaty intake sounds, felt a difference. Would recommend

NGL I was thinking about cutting off the peg brackets and beefing up that part of the frame until I saw this bracket on a Facebook group that I'm in. There great easy to install and now it's 1 less thing I have to worry about when I jump it.

Great quality product, really well made, hopefully it will never be used as intended, But I'm sure it will be up to the job if it has to

The work was fantastic! No problems in the process and you get what you pay for! Thank you for doing a great job!!

Firstly, Ari’s customer service and communication is top shelf. He’s a busy dude, but was always there if I had a question. Now…the bike: I went for the Stage 3 and sweet baby Jesus, the power difference is in-your-face noticeable. I’ve put just over 2k miles on it since and have been thoroughly impressed. Not a hiccup or weird noise and the oil is great when I change it. I’ve taken this bike to the Michigan Upper Peninsula where it shined and kept up with friends on orange bikes no problem. Here in Northern AZ, I don’t feel limited at all by the CRF. Just yesterday I had to slab it home for 250 miles and it cruises very comfortably at 70 and 80 is there when I need it. Stock gearing too! This thing also lugs up the steep rutted tracks with ease. All this with low-maintenance intervals? Yep. Thanks Ari!

If you own a CRF300L and haven't done the 301cc Big Bore Kit, you're seriously leaving power on the table. This kit is the real deal — a race-proven setup with championship wins and a lap record to back it up. The jump to 11.5:1 compression combined with the full Stage 3.0 package transforms what was a capable but underwhelming commuter into an absolute riot to ride. The throttle response is crisp, mid-range torque is dramatically improved, and highway cruising feels effortless in a way it never did stock.
What really sets this apart is the attention to detail. Ari pre-gaps the rings, pre-installs them on the piston, and drops the whole assembly into the cylinder for you — so installation is far less intimidating than it sounds. The dyno numbers don't lie either: +25% torque and +34% horsepower with Stage 3.0, and even more if you go with the CNC ported head. For a platform that Honda deliberately detuned, this kit gives you everything Honda left on the table and then some.