Real photos of the item

Black Rotor Cycling Chainring Set - Size Q50(37) and Q37(50)
or 10 interest-free payments of R$ 52,02
- Condition
- BronzeVisible signs of use
- Availability
- One of a kind no restock
What do Gold, Silver, and Bronze mean?
Gold, Silver, and Bronze indicate the signs of wear on pre-owned items. Every item is curated by UNEND, and the photos show the actual item.
- Never UsedNewNew item, never used.
- GoldPre-ownedVery few or no signs of use.
- SilverPre-ownedSlight signs of wear.
- BronzePre-owned(this item)Visible signs of use.
- Authentic and inspected
- 7 days to return
- 30-day warranty
Check delivery times and rates
- Shipped within 72h with Correios, with tracking sent to your email.
- Or pick up for free at UNEND, in São Paulo. Usually ready in 24 hours.
About this item
The Unisex Black Cycling Chainring and Rotor Set – Sizes Q50(37) and Q37(50) is a high-performance solution for cyclists seeking to maximize pedaling efficiency with a smart, ergonomic gearing system. Designed to provide a more natural and fluid power transfer, this set is ideal for athletes who want superior performance in both intense training and competitive races.
Made from CNC-machined high-strength aluminum, the chainrings combine lightness, stiffness, and durability. The aerospace-grade material ensures excellent wear resistance, even under heavy use and in varied terrain conditions. The black anodized finish provides additional protection against oxidation and external damage while enhancing the premium look of the parts.
The standout feature of this set is its oval shape, with sizes Q50(37) and Q37(50), optimizing the point of maximum pedaling effort. This geometry helps distribute force more effectively, reducing peak torque on the joints and increasing efficiency with every rotation. The modern, functional design makes it easy to adapt to most compatible cranksets, offering a balanced gear combination for different types of routes—from technical climbs to high-speed flats.
Condition and authenticity
This item is pre-owned, condition Bronze: visible signs of use.
Before going live, every item goes through UNEND's curation: we inspect it in person, verify its authenticity and grade any signs of use.
The photos show the actual item. Want a closer look at any detail? Ask for more photos or a video on WhatsApp.
Delivery and pickup
We ship within 72 hours of payment confirmation with Correios and send the tracking code to your email.
Estimated delivery times:
- São Paulo (city): 1 to 2 business days
- Greater São Paulo: 2 to 4 business days
- Other state capitals: 2 to 5 business days
- Other locations: 2 to 7 business days
Free pickup at UNEND
R. Prof. Filadelfo Azevedo, 521, Casa 2, Vila Nova Conceição, São Paulo (SP). Usually ready in 24 hours. At checkout, choose Pickup.
Exchanges, returns and warranty
7 days to return: free returns within 7 days of delivery if you change your mind. The item must come back as it was sent, with all accessories and the security seal.
30-day warranty against manufacturing defects, counted from delivery.
Every item is one of a kind, so we don't offer size exchanges. If in doubt, ask for the measurements before buying.
Payment
Credit card in up to 10 interest-free payments, Pix or boleto, through Mercado Pago. You choose at checkout.
Secure site (SSL), payments processed by Shopify and Mercado Pago, and UNEND verified by Reclame AQUI.
Choose options
Real photos of the item

or 10 interest-free payments of R$ 52,02
- Authentic and inspected
- 7 days to return
- 30-day warranty
Check delivery times and rates
- Shipped within 72h with Correios, with tracking sent to your email.
- Or pick up for free at UNEND, in São Paulo. Usually ready in 24 hours.







