Universal Bicycle Crank Arm Protector TPU Sleeve – MTB & Road
Universal Bicycle Crank Arm Protector TPU Sleeve – MTB & Road
Protect Your Crank Arms on Every Ride
Keep your mountain bike or road bike cranks looking factory-fresh with these Universal Bicycle Crank Arm Protector Sleeves. Made from premium TPU (thermoplastic polyurethane), each sleeve wraps snugly around your crank arm to shield it from scratches, scuffs, and everyday trail knocks — without adding bulk or affecting your pedal stroke.
Whether you're hauling your bike in a car, navigating tight singletrack, or doing routine maintenance, these crank protectors keep your drivetrain components looking clean and protected ride after ride.
Key Features
- 🛡️ Impact-Resistant TPU Material — Flexible yet tough; absorbs knocks and scuffs that would otherwise damage bare crank arms
- 🔒 Secure, Snug Fit — Engineered to stay firmly in place during aggressive riding and transport
- 🚲 Universal Compatibility — Fits most MTB and road bicycle crank arms; available in two sizes (E930-A & E930-B)
- 🎨 4 Color Options — Black, White, Orange, and Olive Green to match your build
- ⚖️ Ultralight Design — Only ~24–25g per pair; virtually weightless on the bike
- 🔧 Easy to Install & Remove — No tools needed; simply slip on and off for maintenance
- 📦 Sold as a Pair — Two sleeves per box, covering both crank arms
Specifications
| Material | TPU (Thermoplastic Polyurethane) |
| Colors | Black, White, Orange, Olive Green |
| Size E930-A | 53 × 43 × 19 mm (2.09 × 1.69 × 0.75 in) | 24.2 g/pair |
| Size E930-B | 55 × 43 × 19 mm (2.17 × 1.69 × 0.75 in) | 25.4 g/pair |
| Compatibility | MTB & Road Bicycles |
| Package Contents | 2 × Crank Arm Protector Sleeves (1 pair) |
| Country of Origin | Made in China |
Perfect For
- Mountain bikers wanting to protect carbon or alloy cranks on the trail
- Road cyclists transporting bikes in vehicles or on racks
- Mechanics doing regular drivetrain maintenance
- Cyclists who want to preserve resale value of their components
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Note: Slight color variations may occur due to monitor settings and lighting conditions. Minor dimensional deviations of ±1–2 mm are within normal manufacturing tolerance.
Learn more: OSHA on personal protective equipment
Frequently Asked Questions
Q: Will these bicycle crank arm protectors fit my MTB or road bike cranks?
A: These crank sleeves are designed to be universal and fit most standard MTB and road bicycle crank arms. Two size options are available — E930-A (53 × 43 × 19 mm) and E930-B (55 × 43 × 19 mm) — so please measure your crank arm width before ordering to ensure the best fit.
Q: What material are the crank protector sleeves made from?
A: The sleeves are crafted from high-quality TPU (Thermoplastic Polyurethane), a flexible and impact-resistant material that cushions your crank arms against scratches, scuffs, and knocks without adding significant weight to your bike.
Q: How many protectors come in one box?
A: Each box includes two TPU crank arm protector sleeves — one pair — to cover both your left and right crank arms.
Q: Are these easy to install without tools?
A: Yes! The flexible TPU construction allows you to simply slip the sleeve over your crank arm by hand — no tools required. They're equally easy to remove for maintenance or cleaning.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.