H303 Heart Rate Monitor Replacement Strap

A replacement chest strap for the Magene H303 Heart Rate Monitor, this accessory keeps your training data flowing without requiring a full sensor replacement. Whether you ride the Pune–Lonavala highway in peak summer heat or push through Chennai's humid coastal roads, a worn or damaged strap should never interrupt your structured training. At Rs. 1,190 with free delivery above Rs. 2,500, it is a straightforward fix.

Use Cases

Daily training. Reliable use across Indian training conditions — heat, humidity, and rough tarmac.

Race day. Performance-grade construction for competitive efforts.

Long rides. Built for full-day rides across Western Ghats, Sahyadri, or Nilgiri climbs.

Our Take

Heart rate data is only as reliable as the contact between strap and skin. In India's heat and humidity, sweat accelerates strap degradation faster than in cooler climates. This Magene H303 replacement strap lets you restore accurate readings without replacing the entire sensor pod — a practical, cost-conscious choice for riders training through Hyderabad summers or grinding up the Western Ghats on multi-day routes. Keep a spare; your training zones will thank you.

Sizing for Indian Riders

Chest straps use adjustable elastic bands to fit a range of chest circumferences. Measure your chest at its widest point before ordering. Magene's strap sizing follows standard chest-strap conventions — snug enough for consistent electrode contact but not restrictive. Riders with broader builds common in the Indian population may prefer the strap seated slightly lower on the sternum for a stable, comfortable fit during long climbs.

Compatibility Notes

This strap is designed specifically for the Magene H303 heart rate monitor pod. It is not a universal strap and may not be compatible with sensor pods from other brands. The snap-connector system must match the H303 pod's attachment points. Rinse the strap with fresh water after sweaty rides and allow it to air-dry to extend electrode life and maintain accurate readings.

Pairs Well With

Consider pairing this replacement strap with a Magene H303 heart rate sensor pod, a cycling computer or GPS device that reads ANT+ or Bluetooth heart rate data, cadence and speed sensors for complete training metrics, and a sports wash or antibacterial spray to keep your strap hygienic between rides.

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

Specifications

Explore the full Magene collection at Cobbled Climbs

Why buy from Cobbled Climbs

• 100% genuine — authorised Magene 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

Magene is a Chinese sports technology brand focused on precision cycling and fitness sensors. Known for delivering accurate heart rate monitors, power meters, and cycling computers at accessible price points, Magene products are built around ANT+ and Bluetooth Smart standards, making them compatible with leading training platforms used by riders worldwide.

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.