Shimano Di2 GRX Groupset 1x12 42T

Marsoni

M251S

$812.46

Get it in 3 business days with 1 day shipping. Friday, May 29

Shimano Di2 GRX Groupset 1x12 42TGRX Single 42T 12 speed wireless groupset Includes Front Brake GRX Di2 12 speed STI bled with BR RX820 calliper, right front Rear Brake GRX hydraulic disc brake lever bled with BR RX820 calliper, left rear Rear Mech RD RX827 GRX Di2, 12 speed rear derailleur Crankset FC RX820 GRX chainset 42T, single, 12 speed, Hollowtech II, 175 mm Cassette CS M8100 XT 12 speed cassette 10 51T Chain CN M8100 XT Ultegra HG+ chain with quick link, 12 speed, 126L BT

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Banana clips are high quality, I used 12 awg wires and had no issues. It secures into the plug with 2 small screws, you will need a flat terminal screw driver to install them. The quality was high and made a good connection. If I had to make one complaint it would be that I would tighten the gray piece to the plug and it always kept spinning, otherwise, excellent product.

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Reviewed in the United States on January 29, 2026

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Valkyrie Rider

Omaha, US

★★★★★ 5

Good quality connectors

Size: 6 Pairs

Good quality connectors, holds wire well and stays in place. I’ll buy again

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Reviewed in the United States on March 1, 2026

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GrooV67

Carnegie, US

★★★★★ 4

Worked fine for me

Size: 10 Pairs

I saw some reviews that mention difficulty in threading or fitting. They are tight, but they work fine. I had no issues installing the speaker wire and no issues with the set/crimping screws. I even had one fall out when I loosened it too much and, though it was challenging without my glasses, I did get it to thread back in with no problems. I have purchased other BluRigger products, like HDMI cables, and they are of great quality.

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Reviewed in the United States on December 19, 2024

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OCIE STEWART

Charlottesville, US

★★★★★ 5

They look great and work great!

Size: 12 Pairs

Great contact screws with bare wires and solid inserting with the banana clips! Would buy again!

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Reviewed in the United States on March 25, 2026

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