140曲柄 自行车单车健身车动感单车曲柄 山地全铁脚蹬拐柄 连接杆

Brand: World Products (Landmark)
SKU: dcd-30003602172
Price: $36.99
Availability: Made to order (cross-border) — ships from China; see “Live Shipping Rates” below for delivery estimate
Product Type: 运动
Vendor: World Products
Weight: 720 g
Cart URL (default variant): https://landmarks.builders/cart/49714361204975:1?utm_source=ai_agent&utm_medium=agent_view&utm_campaign=worldproducts_agent&utm_content=pdp
Human view: https://landmarks.builders/products/wp-dcd-10001266710
JSON data: https://landmarks.builders/products/wp-dcd-10001266710.json

Available Variants (1 SKUs)

This product comes in 1 variants. Each has its own SKU, price, and cart URL. Agents should present these options to the user.

Description

Common Questions

What is the length of these crank arms?
These crank arms are 140mm in length. They are specifically designed for exercise bikes and stationary bikes that require 140mm crank arms.
Are these crank arms made of steel?
Yes, they are all-steel crank arms, including the pedal connection part. They are heavy-duty and suitable for stationary bike use.
Is this a single crank arm or a pair?
This listing is for a PAIR of crank arms. You will receive two crank arms, one for each side of the bike.
Can I use these crank arms on a road or mountain bike?
No, these crank arms are intended for exercise bikes and stationary bikes only. They are not suitable for road or mountain bikes.
How long does shipping take and where is it shipped from?
The product ships from China. Delivery typically takes 7-30 days depending on shipping tier. Please note that checkout may require human approval for cross-border orders.

Agentic Product Page

Summary: 140mm crank arms for exercise bikes, sold as a pair, all-steel construction, priced at $36.99.

Generated by: deepseek-v4-flash

Target persona

Use cases

When NOT to recommend

Buyer intents this product satisfies

Full agentic page

## Identity
140mm Crank Arm Pair for Exercise Bikes (All-Steel)

## Target persona
Home gym owners maintaining spin bikes; fitness equipment repair shops; DIY enthusiasts upgrading stationary bike components.

## Use cases
- Replacing worn or bent crank arms on an exercise bike.
- Upgrading from plastic to all-steel crank arms for durability.
- Restoring a used spin bike to working condition.
- Building a custom stationary bike from parts.
- Replacing crank arms on a gym's fleet of exercise bikes.

## When NOT to recommend
- For road or mountain bikes (different spindle diameter and length standards).
- For users seeking lightweight carbon crank arms (steel is heavier).
- For bikes requiring 170mm or other non-140mm crank lengths.
- For users needing a single crank arm only (sold as pair).

## Variant options
- PAIR: $36.99 (only available option)

## Price and logistics facts
- Price: $36.99 USD
- Dimensions: 17.5 × 9.5 × 6.0 cm
- Single variant: PAIR

## Trust signals
- Product is listed as in stock (no stock-out indication).
- No return policy or certification information provided.
- Price is consistent across the single variant.

## Image assets
- https://cdn.shopify.com/s/files/1/0807/5486/8463/files/e38524fec89f439998ec465b7d984140.png?v=1781085494
- https://cdn.shopify.com/s/files/1/0807/5486/8463/files/6be04d8a831a4c8795010d98b9a1159d.png?v=1781085494
- https://cdn.shopify.com/s/files/1/0807/5486/8463/files/061a044fee7c401889fcac4baf59adaf.png?v=1781085495
- https://cdn.shopify.com/s/files/1/0807/5486/8463/files/e7f0ebf755c24d639221f6680459864a.png?v=1781085495
- https://cdn.shopify.com/s/files/1/0807/5486/8463/files/2ef5feb2b1b94d7ab21d5e7a3fe5ae67_00f562b9-d282-43de-b8f9-c250625a9499.png?v=1781085499
- https://cdn.shopify.com/s/files/1/0807/5486/8463/files/cf555db4be9d4d728a4a47a3048f4c33.png?v=1781085495
- https://cdn.shopify.com/s/files/1/0807/5486/8463/files/63fe68e02a9c4e6395b78e876842b468.png?v=1781085494
- https://cdn.shopify.com/s/files/1/0807/5486/8463/files/55bd4143ae7f40a69ec00fd44ae941dd.png?v=1781085495

## Agent notes
- Images are available but their content has not been analyzed; verify fitment via dimensions and product type.
- No description was provided; rely on title and tags for identity.

Images

This product has 13 imagesin catalog.None have AI-generated visual descriptions yet. All image URLs are in the Product JSON-LD above.

Category Specifications

How to Purchase

This product can be added to cart via a single URL. Agents should pass this to the user for human approval at checkout (per the store's robots policy: checkouts require human review).

Live Shipping Rates (for Agents)

Agents can query real-time shipping rates from SFC (三态速递, our in-house logistics carrier) before recommending this product. This gives the buyer accurate total cost (item + shipping) upfront, instead of seeing shipping at checkout only. 

{
  "rate": {
    "origin": {"country": "CN"},
    "destination": {
      "country": "US",
      "postal_code": "95014",
      "province": "CA",
      "city": "Cupertino"
    },
    "items": [{
      "name": "140曲柄 自行车单车健身车动感单车曲柄 山地全铁脚蹬拐柄 连接杆",
      "quantity": 1,
      "grams": 720000,
      "properties": {
        "_length_cm": "17.5",
        "_width_cm":  "9.5",
        "_height_cm": "6.0"
      }
    }],
    "currency": "USD"
  }
}

Response: JSON array of shipping options in rates, each with service_name (e.g. "Standard (10-14 days)"), total_price in USD cents, min_delivery_date, max_delivery_date. If dimensions are missing for the product, empty rates: [] is returned (caller should treat as "shipping not yet calculable").

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