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Description
NISMO Big Operating Cylinder (metal) For Silvia 180SX (R)S13 CA18DET 30620-RS520Brand NISMO Series Name Big Operating Cylinder (for metal disc) Product Descriptions To reduce the pedal load when using a sports clutch, improve half clutch operating characteristics and provide proper clutch connection positioning, the size of the operating cylinder was increased from 3 4 inch (19. 05mm) to 13 16 inch (20. 54mm). This reduces pedal pressure by as much as 14% compared to a standard part., Transmission: FS5W71C, Clutch Type: Push
| Brand | NISMO |
| Series Name | Big Operating Cylinder (for metal disc) |
| Product Descriptions | To reduce the pedal load when using a sports clutch, improve half-clutch operating characteristics and provide proper clutch connection positioning, the size of the operating cylinder was increased from 3/4 inch (ø19.05mm) to 13/16 inch (ø20.54mm). This reduces pedal pressure by as much as 14% compared to a standard part., Transmission: FS5W71C, Clutch Type: Push |
| Product Number | 30620-RS520 |
| Compatible Vehicle | Silvia
180SX (R)S13 |
| Engine | CA18DET |
| Remark | When using the Big Operating Cylinder, the stroke amount of the cylinder decreases, so please adjust the stroke as necessary. 1) Be sure to clamp the hose with a hose clamp to prevent air from entering before removing the standard operating cylinder. 2) Fill the Big Operating Cylinder to be replaced with Brake fluid, remove air beforehand and connect it to the Hose. 3) Even if you do 1), 2) work, air enters the piping. Once the air enters the piping, the pedal stroke and feel change. Because it is difficult to remove air from the thick diameter U-shaped pipe etc, please bleed sufficiently. 4) To facilitate the work of 3), air bleeding by vacuuming is effective (Please use the U-shaped pipe dismantling adapter attached to the NISMO clutch hose). |
| Notes | Images are for illustration purpose only. Actual product may vary. |
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4.4 ★★★★★
Based on 22 reviews
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Product Reviews
★★★★★ 5
Saucony
Size: 3.5 Big Kid, Color: Silver/Purple
Bellas
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Reviewed in the United States on April 16, 2026
★★★★★ 5
Comfortable boy shoes
Size: 4 Wide Big Kid, Color: Black/White
My son’s favorite sneakers. I think this is a fourth pair we ordered as he grows. Lightweight but mostly wide enough to be comfortable. I wouldn’t buy them for a full price but they are often in sale and then it’s great value for my money.
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Reviewed in the United States on October 5, 2025
★★★★★ 4
Merrell Unisex Child Wind 3.0 (4 Big Kid, Silver/Purple)Merrell Unisex Child Wind 3.0
Size: 4 Big Kid, Color: Silver/Purple
These shoes are cute and fit true to size! My daughter loves them.
However these are Saucony shoes, NOT Merrell. I guess these are owned by the same company (I had to look it up) but are still very much so separate brands so I think its a bit misleading to have them labeled Merrell on the listing but Saucony on the actual shoes.
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Reviewed in the United States on April 10, 2025
★★★★★ 3
Good - but not really wide
Size: 2.5 Wide Big Kid, Color: Black/White
I purchased these for my son (6 Years old). He has quite a wide foot, so we purchased these because they said they were wide. They were not. Overall the style is nice, but in the end we had to return them and we wound up with some Sketchers wide sneakers that truly were wide.
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Reviewed in the United States on October 24, 2025
★★★★★ 5
Love them!
Size: 4 Wide Big Kid, Color: Black/White
Great quality, fit as expected, comfortable, and a great value for the money! I wear a size 4 widechildren’s shoe, which makes it very hard to find footwear that fits. And these fit just right!
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Reviewed in the United States on September 13, 2025