2x ALTA Slotted Crank Arm Caps – Threaded Dust Covers for Square Taper

Crank Arm Caps Black Plastic Dust Covers for Square Taper Bicycle Crankset (Pair).

These Crank Caps Black are designed as protective dust covers for bicycle crank arms, ensuring long-lasting performance and a clean appearance. They fit securely into the threaded ends of your crank arms to keep out dirt, moisture, and debris, which helps prevent corrosion and extends the life of your crankset.

Perfect for restorations, upgrades, or replacements on cruiser bikes, BMX, mountain bikes, or city commuters, these caps add a professional finishing touch to your crank area.

• Product Name: Crank Caps Black

• Function: Threaded dust caps for crank arms

• Material: Durable plastic (lightweight and corrosion-resistant)

• Color: Black (matte finish for a clean, OEM-style look)

• Thread Type: Standard crank arm thread (fits most square-taper or cotterless cranksets)

• Diameter (approx.): 22–23 mm outer diameter (varies slightly depending on model)

• Depth (approx.): 5–6 mm

• Compatibility:

  • Suitable for most 3-piece square-taper cranksets

  • Works with vintage, cruiser, BMX, road, and mountain bikes that use standard crank threads

• Weight: Lightweight – approximately 2–3 grams per cap

• Quantity: 1 Pair (2 pieces – left and right side)

• ✅ Protective Design: Keeps crank threads free from dust, dirt, and rust.

• ✅ Lightweight & Durable: High-quality plastic construction offers reliable performance without adding weight.

• ✅ Universal Fit: Works with most standard bicycle crank arms.

• ✅ OEM Replacement: Ideal for replacing missing or worn-out crank arm caps.

These crank caps are used on many Schwinn, Huffy, Mongoose, Kent, and Lowrider-style bicycles, as well as custom builds and vintage restorations. They offer both protection and a clean, finished look to your crank area.

• Make sure threads on crank arms are clean before installation.

• Lightly hand-thread the caps to avoid cross-threading.

• Not compatible with non-threaded crank arms or self-extracting crank bolts.

These Black Plastic Crank Caps are an affordable yet essential accessory to protect your bike’s crank arms. They maintain the polished appearance of your build while preventing unnecessary wear caused by dirt and exposure. Perfect for both classic restorations and modern bikes alike.