Spiderless Retainer Chain Ring Bosch

Specially designed for use with Hopes Boost compatible mountain bike (MTB) cranksets, this Spiderless Boost Retainer chainring adopts the direct mounting system and the narrow/wide tooth design. This tooth profile results in outstanding chain retention over the toughest trails, removing the need for a chain device on your bike. Made from CNC machined 7075-T6 Aluminium, it runs quietly, reduces drag and it's ready for use with the wider chainline on Boost type mountain bikes.

Part Number: RR34EBOSP
Barcode: 5056033499552, 5056033499583, 5056033499576, 5056033499569, 5056033499590, 5056033499606
Barcode: Product Code: HOP CR NS BO

Material: CNC machined 7075-T6 Aluminium

Finish: Hard anodised

Mount: Hope specific Direct Mount

Speed: 12 Speed Shimano

Tooth Profile: Narrow wide

Intended Chainline: 51 - 53mm (Boost 148)

Narrow/wide tooth profile designed to retain the chain without the need of a chain device

Direct mount retainer ring designed specifically for Hope cranksets

Saves weight without the need for a separate spider

Able to run a broader range of smaller chainring sizes

Quieter drivetrain and less drag

Ultra-durable and increases longevity

30T: 61g; 32T: 64g; 34T: 72g

Shipping costs are free shipping for orders totalling over $100, and a flat rate of $15 for purchases totalling under $100. When goods are in-stock, orders are dispatched within 1 to 3 business days, depending on the supplier.

Our returns policy allows you 30 days to return any unwanted item at your own cost, excluding items from made to order, pre order collections, samples or nutrition. All items must be returned via post to BikeChain HQ, or to the specified supplier.

For full shipping and returns information, please visit https://www.bikechain.com.au/shipping-and-returns