SKU: 964866955

CRF300 SSS STAGE 3.25 BIG BORE KIT 325CC DEVELOPED FOR AUSTRALIAN FUELS ⛽️

$760.50 $845.00
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  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 17 - Aug 22

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For Your Every Summer RSVP, with Code: SUMMER15

Description

CRF300 SSS STAGE 3.25 BIG BORE KIT 325CC DEVELOPED FOR AUSTRALIAN FUELS ⛽️SSS Stage 3. 25 325cc Big Bore Kit (CRF300 Performance Upgrade) DESIGNED FOR AUSTRALIAN FUEL QUALITY. Take your CRF300 to the next level with the SSS Stage 3. 25 325cc Big Bore Kit. Includes resleeved cylinder, 81mm piston, ECU reflash, Velocity intake stack, twin snorkel, and airbox vent. Available in 32HP or 34HP with adjustable camshafts. In stock now ready for delivery. Kit Contents 1 81mm Piston Kit (piston, rings, pin & clips) 1 SSS Velocity

 

SSS Stage 3.25 – 325cc Big Bore Kit (CRF300 Performance Upgrade) 

DESIGNED FOR AUSTRALIAN FUEL QUALITY. 

Take your CRF300 to the next level with the SSS Stage 3.25 325cc Big Bore Kit. Includes resleeved cylinder, 81mm piston, ECU reflash, Velocity intake stack, twin snorkel, and airbox vent. Available in 32HP or 34HP with adjustable camshafts. In stock now – ready for delivery.

Kit Contents

1 × 81mm Piston Kit (piston, rings, pin & clips)

1 × SSS Velocity Intake Stack

1 × Second Intake Snorkel

1 × Twin Air Airbox Vent (lid)

1 × SSS ECU Reflash – Stage 3.25 Mapping

1 × SSS Resleeved Big Bore Cylinder

1 × Top-End Gasket Kit

Availability

In Stock – Ready for Delivery

Orders via website only

No phone sales

Power Options

32HP Version: Big bore cylinder, ECU mapping, Velocity intake stack, 2nd snorkel, airbox vent

34HP Version: Adjustable camshafts, big bore cylinder, ECU mapping, Velocity intake stack, 2nd snorkel, airbox vent

Camshaft link below 

https://sssmotorcycles.com/collections/crf300-performance-parts/products/sss-stage-3-5-camshaft-set

Exchange / Core Options

Core Deposit Option: Receive kit immediately, send back original cylinder & ECU for deposit refund

No Core Deposit Option: Send your cylinder & ECU for machining and ECU flash

Buy New: New cylinder & ECU available without exchange

📦 Shipping/Return Address:

SSS Motorcycles

1/22 Macintosh Street

Tamworth NSW 2340

Australia

Installation & Safety Guidelines

Lubrication During Assembly:

Use WD-40 or a very light machine oil for piston installation this is very important to obtain piston ring sealing. Low tension oil control rings. 

Do not use synthetic or high-viscosity oils – may cause temporary oil consumption during run in or assembly. After 1000km no problem. 

Pre-Start Procedure:

Leave spark plug out after assembly

Turn engine over with starter motor in 10-second intervals

Repeat multiple times while monitoring starter motor temperature

Disassembly & Torque:

Follow Honda Genuine Workshop Manual for all disassembly, assembly, and torque specifications

Incorrect torque may cause engine damage or reduced reliability

Professional Installation Required:

Kit intended for licensed, experienced motorcycle mechanics only

SSS Motorcycles accepts no liability for damage caused by improper installation, lubrication, or mechanical inexperience or damage from poor fuel quality or over heating. 

6 months warranty available if installation is preformed by SSS MOTORCYCLES. 

Australian Consumer Law Notice:

Statutory rights under ACL are retained

Liability limited to repair or replacement of the product only. No labour costs. 

 Please note if engine light is on after installation please cycle key 3 times. Check out our YouTube channel for video. Crf300 engine light. 

Warranty Policy

https://cdn.shopify.com/s/files/1/0595/8628/1562/files/SSS_Motorcycles_Warranty_Policy_FINAL.pdf?v=1762165796 

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 964866955

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4.4 ★★★★★
Based on 7 reviews
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Verified Purchase
Nicole S.
Charlottesville, US
★★★★★ 3
Missing items
Color: Sky Blue, Size: 16
Was missing the tie that is supposed to come with it and it looked like it was tried on and thrown back in the bag. The sleeve to the jacket were rolled up.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 7, 2025
A
Alley Cat on a Homestead
Birmingham, US
★★★★★ 5
Excellent Quality, Great Value, Great Look. Highly Recommend
Very well-made, there are some minor imperfections in the cuff sewing that aren't really noticeable when on. Liner is quality, color is spot on, and it fits true to size. If you're in the market for a toddler blazer and pants, you can't go wrong with this one in terms of quality, price, and the cut is perfect for a very polished look. There were a few loose strings to be clipped, but everything was correctly sewn and well. None of them affected the seam strength. The pants have a button and elastic on the waistband to make adjusting the waist size easier.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 14, 2025
A
Amazon Customer
Birmingham, US
★★★★★ 5
Great boys slim fit suit for weddings, church, or special events
Color: Medium Grey, Size: 12
Great kids suit. Comes with a jacket, pants, and tie. Does not have a shirt. Fits as expected. Classic cut on the lapels. Great quality materials. Well made pants and jacket. The color is consistent without any fade or dark spots that can happen with lower quality fabrics. Looks great on. My son loves it. Says it is not restrictive, he can move easily in it. Highly recommend for church, special events, weddings, etc.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 22, 2025
M
Mommynificent
Fort Morgan, US
★★★★★ 5
Nice high-quality, light weight suit for a tween!
Color: Navy Blue, Size: 10
This is such an attractive suit for a tween boy! My son loves dressing up, and this is his new favorite suit. He really likes the double-breasted style and the light weight of the fabric so that it isn't too hot. The tie that came with it gives major Harry Potter vibes which we weren't expecting, but he has lots of other ties that he also enjoys pairing with it. The size seems right, and it fits him well. He says it is very comfortable. I'm happy with the quality and the navy color.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 14, 2025
A
A. Beauto
Houston, US
★★★★★ 5
Stylish and great value!
Color: Medium Grey, Size: 14
This grey suit was a great find for a school ceremony and will definitely be used again. The neutral color makes it easy to pair with different shirts and ties, and it has a modern, clean-cut look. The jacket and pants fit nicely after a quick press, and the quality was better than I expected for the price. It lost a star only because the waist on the pants needed a slight adjustment, but overall, we’re very happy with it!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 10, 2025

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