A close-ratio cassette specifically for e-bikes. Enter the Helix Race 13-52T - a new 12-speed close-ratio cassette, specifically engineered for steep terrain where climbing speeds are high, and descents are gravity-powered.
The 13T, in combination with a 32T chainring, at 85rpm cadence, will deliver speeds at or just above 32kmph/20mph, which is just beyond the speed-limited assistance of most e-bikes. The new 52T lowest gear and closer steps help riders clean the most technical climbs with newfound ease.
While the Helix R 13-52T was conceived with e-bikes in mind, it improves the ride experience for non-e-bike riders, too, allowing them to optimize their cadence on steep climbs and let gravity do the work on descents.
Like all e*thirteen Helix cassettes, the Helix Race 13/52t delivers seamless cross-compatibility with SRAM, Shimano, and TRP 12s drivetrains, as well as improved shifting precision and wear life. Weighing in at 467g, the cogs are reinforced for high-powered e-bikes, yet light enough for weight-optimized trail bikes.
Experience the advantages of a close-ratio cassette on your next ride, with the Helix R 13-52T.
Close ratio gearing cassette for better cadence and improved shifts under load
Lower fatigue and extended range (Bio or Battery) with sweet spot cadence for max efficiency
Helix R 13-15-17-19-22-25-28-32-36-40-45-52 vs Eagle™ 10-12-14-16-18-21-24-28-32-38-44-52
Cross-compatibility with Shimano, SRAM, and TRP drivetrains and chains
Aluminum and Steel clusters can be replaced separately to reduce service cost
Patented two-piece aluminum/steel construction for strength, stiffness, light weight, and durability
Reinforced for e*spec strength - 467g weight
5 bold anodized or PVD color options
Tested extensively for analog and e-bike use
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Refund Policy
Returns Our policy lasts 7 days. If 7 days have gone by since your purchase, unfortunately we can’t offer you a refund or exchange. All returns will incur a 15% restocking fee if not specified otherwise.
To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.
Several types of goods are exempt from being returned. Perishable goods such as food, flowers, newspapers or magazines cannot be returned. We also do not accept products that are intimate or sanitary goods, hazardous materials, or flammable liquids or gases.
Additional non-returnable items: - Gift cards - Downloadable software products - Any Electrical products - Some health and personal care items
To complete your return, we require a receipt or proof of purchase. Please do not send your purchase back to the manufacturer.
There are certain situations where only partial refunds are granted (if applicable) - Book with obvious signs of use - CD, DVD, VHS tape, software, video game, cassette tape, or vinyl record that has been opened - Any item not in its original condition, is damaged or missing parts for reasons not due to our error - Any item that is returned more than 7 days after delivery
Refunds (if applicable) Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund. If you are approved, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within a certain amount of days.
Late or missing refunds (if applicable) If you haven’t received a refund yet, first check your bank account again. Then contact your credit card company, it may take some time before your refund is officially posted. Next contact your bank. There is often some processing time before a refund is posted. If you’ve done all of this and you still have not received your refund yet, please contact us at manager@nelsonmotorcycles.co.nz.
Sale items (if applicable) Only regular priced items may be refunded, unfortunately sale items cannot be refunded.
Exchanges (if applicable) We only replace items if they are defective or damaged. If you need to exchange it for the same item, send us an email at manager@nelsonmotorcycles.co.nz and send your item to: 67 Saint Vincent Street, NSN, Nelson 7010, New Zealand.
Gifts If the item was marked as a gift when purchased and shipped directly to you, you’ll receive a gift credit for the value of your return. Once the returned item is received, a gift certificate will be mailed to you.
If the item wasn’t marked as a gift when purchased, or the gift giver had the order shipped to themselves to give to you later, we will send a refund to the gift giver and he will find out about your return.
Shipping To return your product, you should mail your product to: 67 Saint Vincent Street, NSN, Nelson 7010, New Zealand. Only mail your product once you have notified Nelson Motorcycles and they have accepted the return.
You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of return shipping will be deducted from your refund.
Depending on where you live, the time it may take for your exchanged product to reach you, may vary.
If you are shipping an item over $75, you should consider using a trackable shipping service or purchasing shipping insurance. We don’t guarantee that we will receive your returned item.
