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Box One Oversized Single Speed Cog

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Optimize your power transfer with the Box One Oversized Single Speed Cog, engineered for elite-level performance and durability. CNC-machined from high-strength chromoly steel, this cog features a sleek ED black finish with laser-etched graphics for a premium look that lasts.

Designed specifically for OS spline drivers—including the Onyx Ultra SS Driver—it’s compatible with both 3/32” and 1/8” chains, giving you flexibility across race setups. Available in 14T to 18T sizes, this cog delivers smooth, consistent engagement and efficient power output. Weighing as little as 20g (14T), the Box One Oversized Single Speed Cog is the perfect upgrade for serious BMX racers demanding precision, strength, and performance.

  • Chromoly Steel Offers Extra Long Service Life
  • 5mm Wide Inner Base to Give More Solid Interface with Freehub Body
  • Oversized Spline

Material: Chromoly Steel

Process: CNC-Machined

Finish: ED Black w/Laser-Etched Graphics

Size: 14T, 15T, 16T, 17T, 18T

Compatibility:

  • Driver: OS Spline*
  • Chain: 3/32” or ⅛”

Weight

  • 14T: 20g/0.70oz
  • 15T: 28g/0.98oz
  • 16T: 36g/1.27oz
  • 17T: 38g/1.34oz
  • 18T: 42g/1.48oz

*Onyx Ultra SS Driver

$49.99
Color
Teeth
BX-COOS16T-BK
Quantity
In-Stock

Availability
In Stock
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Payment method available

Manufactured by

BOX COMPONENTS

Shipped by

Shipped by BOX COMPONENTS

Note: This item will be shipped to you direct from the Manufacture listed, if you are located in the USA. This may take a few extra days to ship and will ship separately to you if you are ordering other items from different brands.

Real Stock - Most in stock items shipped by BRG (as listed) ready to ship within 24hrs during Monday-Thursday. Inventory updated daily at 7am Pacific. Drop Ship items & Items on Demand/Built to order are noted for additional shipping times.
Fast Delivery - Items usually are out for Delivery to you in 2-5 business days (USA & In Stock Items). Free shipping (continental US parts orders) over $150.
Secure Payments - Payment by credit card SSL STRIPE or Paypal account. Online payment securely for Visa or Mastercard, Apple Pay, & Amazon Pay methods options also available.
Satisfied or Refund - If the product isn’t what you needed/expected You have 5 days from receipt of your order to return. Please see return policy for all info. Sale items and Clothing are final sales.

More Description

Material : 7075-T6 Aluminum

Other: Lasez-etched logos

Weight:

  • 13t: 8 grams / 0.3 ounces
  • 14t: 11 grams / 0.4 ounces
  • 15t: 13 grams / 0.5 ounces
  • 16t: 14 grams / 0.8 ounces
  • 17t: 16 grams / 0.6 ounces
  • 18t: 18 grams / 0.65 ounces

Product Details

BX-COOS16T-BK

Data sheet

MATERIAL
Chromo

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Box One Oversized Single Speed Cog

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