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Ships within 48 hours · Estimated delivery Jul 8 - Jul 13
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Description
Grams Performance 12-13 Civic Si Plug and Play Adapter (for 550/750/1000cc Injectors)Grams adapters allow for a plug and play installation of the Grams 550, 750, 1000cc injectors for the 2012 2013 Civic Si. Please note that price is for 1 individual Adapter. This Part Fits: Year Make Model Submodel 2012 2013 Honda Civic Si
Grams adapters allow for a plug and play installation of the Grams 550, 750, 1000cc injectors for the 2012-2013 Civic Si. Please note that price is for 1 individual Adapter.This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2012-2013 | Honda | Civic | Si |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
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- Standard Shipping : 3-10 business days
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
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4.8 ★★★★★
Based on 1260 reviews
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Product Reviews
★★★★★ 5
Comfortable
Size: Medium, Color: Set-unbl
Soooo comfy
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Reviewed in the United States on May 7, 2026
★★★★★ 4
Could be longer in the legs but that’s my preference
Size: X-Large, Color: Set-un2
Very comfortable just wish they were a little longer
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Reviewed in the United States on February 25, 2025
★★★★★ 5
Perfect for my body and fit preference, plus COTTON
Size: X-Large, Color: Set-unbl
Update: Different color packs fit differently. I've purchased two packages, one all-black and one black with the colorful waistbands. The all-black are a little smaller. IMO the all-black run a half to a full size small, and the black with the colorful waistbands run true to size.
Listen, all of our bodies and preferences are so different, but these are perfect for my body and my fit preference. They hit at my bellybutton and I would describe the length as short-boyshorts, but not hipsters. Most importantly, they're cotton, which my body reacts much better to these days.
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Reviewed in the United States on February 13, 2026
★★★★★ 5
Good quality
Size: Medium, Color: Set-unbl
They fit perfectly and seem well made
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Reviewed in the United States on February 22, 2026
★★★★★ 5
Will be buying more
Size: X-Large, Color: Set-unbl
LOVE THESE!
They’re so comfortable and stretchy.
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Reviewed in the United States on April 24, 2026