★★★★★ 5
Good price
Size: CB-M03H
Good price appears sturdy good instructions
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 19, 2026
High Performance Porsche 9mm Valve Springs and Ti-retainer kit 911/930/964 engines
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
High Performance Porsche 9mm Valve Springs and Ti-retainer kit 911/930/964 engines9mm Kit includes Aasco HP109 High Performance Valve springs, HP10T9 Titanium spring retainers and HPSS Spring Seats. These Valve Springs are designed and manufactured to specifically fit the envelope of a Porsche application not a spring from another use.
Quick Dispatch:
Your High Performance Porsche 9mm Valve Springs and Ti-retainer kit 911/930/964 engines orders ship within 1-2 business days.
Delivery Options:
- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 business days
Order Tracking:
You'll receive a tracking link by email once your High Performance Porsche 9mm Valve Springs and Ti-retainer kit 911/930/964 engines ships.
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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
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4.1 ★★★★★
Based on 2353 reviews
Sort
Product Reviews
★★★★★ 4
Nice
Size: CB-M03H
Could be a bigger one
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 2, 2026
★★★★★ 5
These hog out the hole nicely
Size: CB-M03H
These hog out the hole nicely
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 7, 2025
★★★★★ 5
Very nice product.
Size: CB-003
Haven’t needed to use it yet, but it is definitely a quality product.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 1, 2025
★★★★★ 5
It works
Size: CB-M03H
I use it on a power tool as regular drill bits seem to not work to well with the plugs. They leak air. Doing it by hand is to hard
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 20, 2025
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