


COMP Cams Camshaft CRB3 299Th R7 Thumper
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
COMP Cams Camshaft CRB3 299Th R7 ThumperDesigned to deliver an aggressive, hard hitting exhaust note at idle, the Thumpr camshaft series from COMP Cams also delivers excellent horsepower gains and a broad torque curve. A perfect choice for muscle cars and street rods, the Thumpr series' early intake valve opening and long exhaust duration create optimum overlap for that race car idle. The Thumpr grinds all require an aftermarket torque converter and lower gear ratio to ensure the drivetrain
Quick Dispatch:
Your COMP Cams Camshaft CRB3 299Th R7 Thumper orders ship within 1-2 business days.
Delivery Options:
- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 business days
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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]
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4.0 ★★★★★
Based on 1301 reviews
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Product Reviews
★★★★★ 4
Car run better
Size: Pack of 1, Style: Fuel System Treatment
Very easy to use just pour and go.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 30, 2022
★★★★★ 5
Excellent value for treatment
Size: Pack of 1, Style: Fuel System Treatment, Size: Pack of 1, Style: Fuel System Treatment
Fuel my turbo and engine run smooth after adding this... Excellent results
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 22, 2022
★★★★★ 5
quality fine product.
Size: Pack of 1, Style: Fuel System Treatment
keeps vehicle running smooth.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 10, 2023
★★★★★ 5
Very Nice
Size: Pack of 1, Style: Fuel System Treatment
Very Nice Item and Fast Shipping!
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Reviewed in the United States on February 7, 2020
★★★★★ 1
Cheap
Size: Pack of 1, Style: Fuel System Treatment
Didn’t make an executive
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Reviewed in the United States on May 13, 2026
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