Chainring Nut Wrench

The Birzman Chainring Nut Wrench is a purpose-built workshop and field-repair tool designed to tighten or remove chainring bolts with precision. Whether you are prepping your bike for a Lonavala climb or fixing a loose chainring mid-ride on a Pune-to-Mumbai route, having the right dedicated tool makes a measurable difference over improvised solutions. Cobbled Climbs is the authorised retailer for Time in India.

Use Cases

Daily training. Durable chain construction for repeat training use.

Race day. Optimised chain for clean shifting and minimal drivetrain friction.

Replacement intervals. Replace at chain stretch to protect cassette and chainring wear.

Our Take

Chainring bolts are easy to overlook during a pre-ride check, yet a loose chainring on a long climb — say, the Western Ghats or the ascent toward Ooty — can sideline your ride entirely. Birzman's Chainring Nut Wrench addresses this specific, often-neglected task with a focused design. At Rs. 475, it is a low-cost addition to any home workshop or well-stocked saddle bag that pays for itself the first time it saves a ride.

Sizing for Indian Riders

This is a tool, not an apparel item, so European sizing charts do not apply. However, confirm your chainring bolt standard before ordering — older double and triple chainrings sometimes use different bolt patterns than modern single-ring setups. If you ride a compact or semi-compact crankset popular among Indian endurance riders managing heat above 35°C, the wrench should be compatible. Contact Cobbled Climbs if unsure.

Compatibility Notes

The Birzman Chainring Nut Wrench is designed for standard chainring bolt and nut configurations found across road and MTB drivetrains. It works alongside most Shimano, SRAM, and compatible cranksets. Store away from moisture — especially important during India's monsoon months — to prevent any tool wear. All Birzman products at Cobbled Climbs are 100% genuine and authorised.

Pairs Well With

Round out your toolkit with a quality multi-tool covering hex keys and a chain breaker, a chain wear indicator for drivetrain maintenance, a torque wrench for carbon-safe installs, and a compact saddle bag to carry essentials on every ride. Available across categories at Cobbled Climbs.

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

Specifications

Explore the full Time collection at Cobbled Climbs

Why buy from Cobbled Climbs

• 100% genuine — authorised Time retailer in India
• Free delivery on orders above Rs. 2,500
• Cash on delivery available nationwide
• 7-day easy returns
• Shipped from Mumbai
• Expert advice — built for Indian cycling conditions

Birzman is a Taiwanese tool and accessory brand known for precision-engineered cycling tools, pumps, and workshop equipment. Built for riders who take maintenance seriously, Birzman products combine functional design with durability, making them a trusted choice for home mechanics and workshop professionals alike.

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:
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.