Shipping Estimate
USA
- USA
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- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 8 - Jul 13
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For Your Every Summer RSVP, with Code: SUMMER15
Description
GRX RD-RX810GRX 11 speed rear derailleur for double cranks Adjustable chain stabilizer prevents chain slapping and drops Gravel tuned clutch tension can be toggled ON OFF to match the terrain Maximum front difference: 17T Total capacity: 40T Low sprocket: Max. 34T Min. 30T Top sprocket: 11T Attributes Cage GS Max Front Difference 17T Maximum Cog 34T Minimum Cog 11T Primary Color Grey RD Capacity 40T RD Spring Type Shadow Plus RD Weight 255g Speed 11
- GRX 11 speed rear derailleur for double cranks
- Adjustable chain stabilizer prevents chain slapping and drops
- Gravel-tuned clutch tension can be toggled ON/OFF to match the terrain
- Maximum front difference: 17T
- Total capacity: 40T
- Low sprocket: Max. 34T/Min. 30T
- Top sprocket: 11T
Attributes
| Cage | GS |
| Max Front Difference | 17T |
| Maximum Cog | 34T |
| Minimum Cog | 11T |
| Primary Color | Grey |
| RD Capacity | 40T |
| RD Spring Type | Shadow Plus |
| RD Weight | 255g |
| Speed | 11 |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.2 ★★★★★
Based on 1059 reviews
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Product Reviews
★★★★★ 4
A worthwhile addition to just butyl itself.
Model: 197mil 31 sqft Car Sound Deadening Mat
I used this as a topper to butyl sound deadening material on the floor and side panels and am very pleased. It was generally easy to use. It is very sticky and cannot be easily repositioned as the foam will separate from the sticky side if you try, but its not a big deal. I have yet to run the car but the panels are much quieter when tapped on vs just the butyl alone, and this stuff weighs almost nothing.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 17, 2026
★★★★★ 5
Good deadening
Model: 197mil 31 sqft Car Sound Deadening Mat
This sound deadening works well and has good adhesion .
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 18, 2026
★★★★★ 5
Easy to install and great value.
Model: 197mil 31 sqft Car Sound Deadening Mat
Very easy to cut and install with the rollers I bought separately. It adheres well even though I was installing it when the weather was closer to 40-50 degrees. Definitely helps to deaden the sound from the bare sheet metal.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 2, 2026
★★★★★ 1
Garbage
Model: 197mil 31 sqft Car Sound Deadening Mat
Straight garbage, I tried to cut corners on cost of building an spl car and should have stuck with dynamat or something like that. This is NOT for sound deadening…… Garbage product!!!
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Reviewed in the United States on June 5, 2026
★★★★★ 3
Not for me
Model: 197mil 31 sqft Car Sound Deadening Mat
Seemed “cheap” for my personal needs, so I returned it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 23, 2026
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