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GRX RD-RX812 11 Speed Rear Derailleur

Sale priceRs. 9,560.00

Earn up to Rs. 478.00 cashback with Club House


Color: Black
Type: Medium Cage
Teeth Ratio: 42T
Description

Drivetrain components carry every watt from your legs to the road. Indian conditions — dust, monsoon, humidity — accelerate wear. The Shimano GRX RD-RX812 11 Speed Rear Derailleur delivers durability and shifting precision under these conditions.

Use Cases

Daily training. Reliable drivetrain components mean trouble-free training. Cheap parts cost more in shop visits and missed rides.

Race day. Crisp shifting under load and confident braking are race-day non-negotiables.

Endurance events. Drivetrain durability over 200km+ separates equipment from pretenders.

Our Take

The Shimano GRX RD-RX812 11 Speed Rear Derailleur delivers reliable shifting and durability under Indian conditions. Drivetrain quality compounds — better components mean less maintenance, fewer roadside repairs, and longer service intervals. Worth the investment.

Sizing for Indian Riders

Drivetrain compatibility is multi-axis: groupset speed (10/11/12-speed), brake type (rim or disc), shifter mount (mechanical or electronic), and chainline. Verify each axis matches your existing drivetrain or your full-build spec. Mixed-brand setups (e.g., SRAM with Shimano) often work but check specific compatibility before buying.

Compatibility Notes

Verify groupset speed compatibility (10/11/12-speed), brake mount type, shifter mount type, and chainline. Mixed-brand setups often work — check Shimano's specific compatibility matrix. Replace chain when 0.5% or 0.75% wear is reached (check with chain wear tool); waiting longer wears cassettes and chainrings prematurely.

Pairs Well With

For a complete setup, consider pairing the Shimano GRX RD-RX812 11 Speed Rear Derailleur with compatible chain lubricant for Indian conditions, a chain wear checker, a multi-tool with chain breaker, and replacement cables. Browse the full range at Cobbled Climbs.

Specifications

Specification Detail
Brand Shimano
Product Type Rear Derailleurs
Shipped From Mumbai, India

Frequently Asked Questions

Is this part compatible with my groupset?

Drivetrain compatibility is multi-axis: groupset speed (10/11/12-speed), brake type (rim or disc), shifter mount (mechanical or electronic). Verify each axis matches your existing drivetrain. Mixed-brand setups (Shimano with SRAM) often work but check specific compatibility.

How long does this part typically last?

Drivetrain wear depends on cleaning, lubrication, and Indian conditions. Chains: replace at 0.5-0.75% wear (typically 3,000-7,000km). Cassettes: 2-3 chain replacements. Chainrings: 4-6 chain replacements. Worn chain accelerates everything else.

Should I service this myself or get professional installation?

Routine drivetrain replacement (cables, chains, cassettes) is suitable for confident home mechanics with proper tools. Bottom brackets, hubs, and headsets benefit from professional installation. Consult Cobbled Climbs' mechanic team if unsure.

Is this part for road or MTB?

Verify in the product title and specification. Road and MTB drivetrains use different ranges and ratios. Most components are application-specific.

How does Indian monsoon and dust affect drivetrain wear?

Indian conditions accelerate wear by 30-50% compared to dry climates. Clean and re-lube the chain weekly during monsoon. Use wet-condition lube during the rains; switch to dry/wax lube post-monsoon. Service drivetrain pre and post-monsoon for longest component life.

Explore the full Shimano collection at Cobbled Climbs | Learn more at Shimano

Details

Shimano GRX RD-RX812 11 Speed Rear Derailleur. Precision-engineered cycling component designed for performance and durability. Compatible with modern cycling standards. Built to withstand Indian riding conditions including heat, humidity, and varied road surfaces. Check specifications on the product page for detailed technical information.

Specifications

Specification Detail Brand Shimano Product Type Rear Derailleurs Shipped From Mumbai, India

Fitting

Drivetrain compatibility is multi-axis: groupset speed (10/11/12-speed), brake type (rim or disc), shifter mount (mechanical or electronic), and chainline. Verify each axis matches your existing drivetrain or your full-build spec. Mixed-brand setups (e.g., SRAM with Shimano) often work but check specific compatibility before buying.

The Story Behind The Brand

Shimano is a Japanese brand founded in 1921 and stands as one of the most influential names in global cycling. Known for engineering precision, mechanical reliability, and continuous innovation, Shimano designs components trusted by riders from daily commuters to WorldTour professionals. Every product reflects a focus on smooth performance, durability, and the instinctive feel cyclists rely on.

Loyalty Program

Why pay full price when loyalty pays back?

Club House rewards you for every purchase — up to 5% cashback, 100 bonus points to start, birthday rewards, and early access to limited drops. It’s our way of saying thanks for riding with us.

Shipping + Returns + Refunds

Shipping:
We ship all orders within 48 hours, excluding Sundays and public holidays. Delivery typically takes 3 to 5 days depending on your location.

Returns:
If your item arrives damaged, incorrect, or doesn’t fit, you may request a return within 7 days of delivery. Email us at support@cobbledclimbs.com with your order details. Items must be unused and returned in original packaging with all tags and labels intact.

Sale Item Guidelines:
Products purchased on sale are final sale and not eligible for return or exchange. Please double-check sizing, fit, and product details before purchasing.

Please note:
We follow a no money refund policy. Eligible returns are offered store credit or exchange only.

Crash Replacement

Easy Returns

GRX RD-RX812 11 Speed Rear Derailleur - Shimano - Cobbled Climbs
GRX RD-RX812 11 Speed Rear DerailleurBlack / Medium Cage / 42T Sale priceRs. 9,560.00

Earn up to Rs. 478.00 cashback with Club House

Frequently Asked Questions

Does Cobbled Climbs ship GRX RD-RX812 11 Speed Rear Derailleur across India?
Yes, Cobbled Climbs ships GRX RD-RX812 11 Speed Rear Derailleur to all major cities across India including Mumbai, Delhi, Bangalore, Chennai, Pune, Hyderabad, Kolkata, and Ahmedabad. Orders above ₹2,500 qualify for free shipping. Standard delivery takes 3–5 business days. Express delivery is available at checkout for most pin codes.
Is the GRX RD-RX812 11 Speed Rear Derailleur on Cobbled Climbs 100% authentic?
Yes. Cobbled Climbs is an authorised retailer for Shimano in India. Every product, including GRX RD-RX812 11 Speed Rear Derailleur, is sourced directly from the brand or their official distributors. All products come with original brand packaging, tags, and warranty documentation.
What is the return and exchange policy for GRX RD-RX812 11 Speed Rear Derailleur?
Cobbled Climbs offers a 30-day return and exchange policy on GRX RD-RX812 11 Speed Rear Derailleur. The item must be unused and returned in its original packaging with all tags attached. To initiate a return, email support@cobbledclimbs.com with your order number. Size exchanges are processed free of charge on the first request.
Is GRX RD-RX812 11 Speed Rear Derailleur currently in stock?
Yes, this product is currently in stock and available for immediate dispatch.
What payment methods are accepted?
Cobbled Climbs accepts all major payment methods including UPI (GPay, PhonePe, Paytm), credit and debit cards (Visa, Mastercard, RuPay), net banking, and EMI options on select cards. All transactions are secured with SSL encryption.
Does GRX RD-RX812 11 Speed Rear Derailleur come with a manufacturer warranty?
GRX RD-RX812 11 Speed Rear Derailleur by Shimano comes with the manufacturer's standard warranty as specified in the product details on this page. For warranty claims in India, contact Cobbled Climbs at support@cobbledclimbs.com and we will coordinate with Shimano on your behalf.
How do I find the right size for GRX RD-RX812 11 Speed Rear Derailleur?
Shimano uses European or international sizing which can run slim compared to Indian sizing. We recommend checking the size chart on this product page and measuring yourself before ordering. If you are between sizes, sizing up is generally recommended for comfort. For sizing assistance, email support@cobbledclimbs.com with your measurements and we will advise.
Can I get a price match if I find GRX RD-RX812 11 Speed Rear Derailleur cheaper elsewhere?
Cobbled Climbs offers competitive pricing on all products including GRX RD-RX812 11 Speed Rear Derailleur. If you find the same product at a lower price from another authorised Indian retailer, contact us at support@cobbledclimbs.com with the link and we will do our best to match it. Price matching applies only to authorised retailers selling genuine products, not grey market or parallel import listings.