TRKIMAL
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$63.99
HOUSON Aluminum Crank Lock Washer (16mm/21.6mm) | Anti-Lock System with Pin | For Hollowtech II Cranks | MTB/Road Bike Compatible
★★★★★
$63.99
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1
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About this item
- 【Prevents Crank Loosening】 The pin-and-pin system locks into the crankshaft's mounting hole, preventing rotational loosening even under extreme vibrations.
- 【Precise Compatibility】 Exactly 16mm inner diameter + 21.6mm outer diameter. Suitable for Hollowtech II systems: FC-R8000/R9100, FC-M9020/M985, XTR, 105, Ultegra, GRX, etc.
- 【Lightweight & Corrosion Protection】 CNC-machined from aircraft-grade aluminum – rust-proof, magnet-free, and weighing less than 5 grams. Does not affect bottom bracket performance.
- 【Easy installation without tools】 Simply insert between the crank and bottom bracket – align the pin radially to the crankshaft hole. No modifications required.
- 【Professional safety standard】 Critical component for enduro/downhill – prevents crank loss under shock loads.
Product description
Aluminum Crank Lock Washer
Product details
Customer reviews
What customers say about Bigamart
10 Trustpilot reviews total, with 2 shown at a time.
Trustpilot
★★★★★
Excellent
4.5 average rating
S
Sigalit
🇮🇱 · January 2026
★★★★★
I wrote to Bigamart's customer support and they accompanied the process of reshipping the item until it finally arrived. I felt a genuine effort to solve the problem till it was finally solved.
V
Verified buyer
🇦🇺 · November 2025
★★★★★
The package was here in Australia from England in a few days — so quick! Something was missing and they refunded it straight away. Pretty happy with these guys.
Showing 1–2 of 10 reviews
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