# Promax SC-1 Square Taper Chromoly JIS Bottom Bracket 108mm Black

SC-1 bottom brackets are the perfect choice for those who still prefer the low weight and simplicity of square taper cranks. Each bottom bracket is hand assembled using a hollow chromoly spindle precision sealed bearings forged and CNC-machined alloy cups and a composite center spacer/seal.-   Hollow chromoly spindle
-   CNC-machined alloy cups
-   JIS square taper
    
    Bottom Bracket Shell I.D.
    
    1.37
    
    BB/Frame Interface
    
    English
    
    BB Shell Width (mm)
    
    68
    
    Weight
    
    246
    
    Spindle Interface Type
    
    Square Taper JIS
    
    Spindle Length
    
    108
    
    Defined Color
    
    Black
    
    Length
    
    108Mm

## Details

- **Price:** 29.99 USD
- **Vendor:** Gio's Outdoors
- **Type:** Bottom Brackets
- **Tags:** Gio's Outdoors, Shopify Collective

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 29.99 USD | In stock |

## Images

- Promax SC-1 Square Taper Chromoly JIS Bottom Bracket 108mm Black

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> Source: [Smart supply deals](https://smartsupplydeals.com/products/promax-sc-1-square-taper-chromoly-jis-bottom-bracket-108mm-black)
> Updated: 2026-07-22