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Wilwood Caliper-Forged Superlite 4R-ST-R/H - 1.88/1.62in Pistons 1.25in Disc

Marsoni M251S
Sale price$234.31
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Wilwood Caliper-Forged Superlite 4R-ST-R/H - 1.88/1.62in Pistons 1.25in DiscFSL4R ST calipers provide the pad wear performance advantages of differential bore pistons with the option for ultimate heat protection using Thermlock pistons in the ST models. Differential piston bores compensate for leading edge mechanical loading and temperature variances across the pad face to reduce pad taper wear in sustained high temperature applications. Thermlock pistons in the ST models block heat transfer from the pads and reduce
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
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4.4 ★★★★★
Based on 524 reviews
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Verified Purchase
Jonathan Gerber
Cuba, US
★★★★★ 5
Fits really well. Materials appear sturdy.
Size: 36mm
Fits my 05 Z4 prefect. Materials seem sturdy. Will probably last longer than the car.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 19, 2025
H
Verified Purchase
Hugh G Koch
Lexington, US
★★★★★ 5
A great socket.
Size: 27mm
Got it for a bmw oil filter housing. It does its job great.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 4, 2024
T
Verified Purchase
The Central Scrutinizer
Phoenix, US
★★★★★ 5
Gets Job Done. Good Price.
Size: 36mm
I used this to take the large bolt off the triple tree clamp on my motorcycle. For this purpose it worked great. I doubt I'll need to do this often and I'm unlikely to ever own the vehicles who's oil filter it fits but glad I bought it. If you need a 36mm bolt undone and have a 3/8th drive wratchet this is an economical way to get it done.
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Reviewed in the United States on October 29, 2017
H
Verified Purchase
Hummus man
Whiting, US
★★★★★ 4
A good product for a good price.
Size: 36mm
it was the right size, what more could I ask for and no profile that's the bomb.
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Reviewed in the United States on January 18, 2018
L
Verified Purchase
lacey_girl
Waukegan, US
★★★★★ 5
High quality
Size: 36mm
Perfect fit for my 2008 Audi TT oil filter cap. FYI, don't bother removing the plug in the cap if it is stripped. Mine was stripped by Audi mechanics and I thought it held the cap in place. It does not. I tried to loosen it with a chisel and broke the cap. An expensive, rookie mistake.
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Reviewed in the United States on December 3, 2023

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