301cc Big Bore Piston & Cylinder Set

Name: CRF300L Big Bore 301cc Big Bore Piston & Cylinder Set - 301cc Big Bore Piston & Cylinder Set
Brand: CRF300L Big Bore
SKU: 44293228167343
Price: 749.0 USD
Availability: InStock
Rating: 5 (24 reviews)

4.5 (1,234)

Sold 100+ last 30 days

20% off first order

$749.00

Quantity

Color

Black

Quantity

Originally developed for my racing endeavors on a CBR300R, this kit has dozens of race wins, two class championships, and one lap record to its credit. With tens of thousands street and off-road miles logged, this is a proven and reliable setup for improving your CRF's performance, capability, and fun factor.
This piston and cylinder set

5.0

24 ratings

Crf300l big bore kit review

The big bore kit definitely transformed my 300l. Before this, i had the “stock improved” tune from 550 performance along with some air flow mods which definitely opened it up a little but Ari’s kit along with the stage 3 tune for sure took it to another level. It pulls harder in every gear, has noticeably more torque, and i can now comfortably cruise at highway speeds without it screaming. Ari was truly a joy to work with from start to finish! I bombarded him with questions before and after i bought the kit and he always got back to me right away. He truly loves what he does and is VERY knowledgeable with the 300 motors. Thanks soo much Ari!

Dillon · August 29, 2026

100% recommend this kit and company

Ari is great! The big bore kit is a huge improvement and customer support is the best around!

Colton · August 17, 2026

Awesome upgrade, looking forward to the first test.

I am just now getting into the upgrade, however the kit looks amazing. Everything was very well packaged and was shipped quickly. I am so stoked to feel the bike with the 301cc Big Bore.

Matthew · July 7, 2026

CRF300L Big Bore

5 (103)

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5.0

24 ratings

Crf300l big bore kit review

Dillon · August 29, 2026

100% recommend this kit and company

Ari is great! The big bore kit is a huge improvement and customer support is the best around!

Colton · August 17, 2026

Awesome upgrade, looking forward to the first test.

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Matthew · July 7, 2026

CRF300L Big Bore

5 (103)

301cc Big Bore Piston & Cylinder Set

Description

Reviews5.0(24)

Delivery & Returns

CRF300L Big Bore

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