SKU: 5726493023

Mazda 12A & 13B Underdrive Crank Pulley

Sale price$150.98 Regular price$167.76
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  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 21 - Jul 26

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Description

Mazda 12A & 13B Underdrive Crank PulleyLightweight crank pulley made from aircraft grade 6061 T6 aluminium for light weight, and black anodised for great looks. Offers faster acceleration through significant reduction of mass having to be accelerated by the crankshaft. The effect is similar to a lighter flywheel, and the car feels more lively and willing to rev. Pulley outside diameter is 88mm. Suits early 12A and 13B rotaries through to series 5 RX 7. Please check our other listings for

Lightweight crank pulley made from aircraft-grade 6061-T6 aluminium for light weight, and black anodised for great looks.

Offers faster acceleration through significant reduction of mass having to be accelerated by the crankshaft. The effect is similar to a lighter flywheel, and the car feels more lively and willing to rev.

Pulley outside diameter is 88mm.

Suits early 12A and 13B rotaries through to series 5 RX-7.

Please check our other listings for underdrive alternator pulleys and waterpump pulleys.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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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.
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SKU: 5726493023

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4.4 ★★★★★
Based on 28 reviews
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Product Reviews
J
Verified Purchase
James B. Ross
Pawtucket, US
★★★★★ 5
x
Color: Nude, Size: Women 9-13
as described
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 20, 2026
J
Verified Purchase
Joe
Draper, US
★★★★★ 1
Do not buy these
Color: Nude, Size: Women 9-13
These are terrible. They are designed to walk in. The first day I tried them on I walked about 20 steps and they basically ripped right off my feet. I didn’t think much of it and just thought ok I won’t walk in them I’ll just wear them to bed. The second pair that came with the order I wore to bed that night and woke up with holes tore in them. Terrible product
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 22, 2026
K
Verified Purchase
Kevin
Phoenix, US
★★★★★ 5
Durable
Color: Nude, Size: Women 9-13
These are form-fitting and durable. Wearing these keeps the skin moisturizer in place so it can be effective.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 14, 2026
K
KN
Boise, US
★★★★★ 5
Great Results
Color: White, Size: Women 9-13, Color: White, Size: Women 9-13
The Jfrhuds Moisturizing Silicone Socks work very well. I ordered the white 2-pack in the large size 9-13, and each came packaged in an individual zipper bag.  I wear a women's size 9-9.5, and they fit me perfectly.  I can see how they have enough stretch to fit larger sizes easily and comfortably. These socks are a lot thicker and heavier than I expected.  They are rubbery with non-slip treads on the bottom.  As soon as I put them on my feet, they actually felt very moisturizing and almost wet, even though I had not put moisturizer on my feet first.  Plus my feet felt cold at first. It was different than I expected, I had never worn this type of sock before, and it was an interesting sensation. They work great, and I am sold on the benefits of these socks.  I wear them to sleep at night and dodn't walk very far in them.  They seem pretty sturdy, but I don't want to push it and will just use them for their intended purpose.  My feet weren't super dry or cracked, but the socks really helped revive them and make them super soft again.  I love them; they are great for self-care and would also make a wonderful gift. 
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Reviewed in the United States on April 20, 2026
M
Verified Purchase
Michael S. Johnson
Pawtucket, US
★★★★★ 1
Not durable
Color: Nude, Size: Women 9-13
Only used two of them so far. One sock lasted nearly 3 wears. The other broke before I could finish wearing it the second time. Basically useless junk.
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Reviewed in the United States on April 2, 2026

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