BB Cup Spacers For Specialized Carbon Frame

Widens 61mm wide Specialized Carbon OSBB frame BB shells for use with Pressfit 30 bottom brackets. Place one 3.5mm BB cup spacer between each bottom bracket cup and the frame when installing the bottom bracket. Additional crank spindle spacers included to fine-tune any crankset fitment play.

  • Includes 2 - 3.5mm bottom bracket cup spacers (46mm ID)
  • Includes 4 - .5mm crank spindle spacers (24mm ID)
  • Includes 2 - 1.0mm crank spindle spacers (24mm ID)

Machined engineering-grade Delrin.

Precision Machined


In stock

This item can be purchased from our online partner BICYCLEPARTSDIRECT.COM

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If the bearing cups are already in the frame, remove them by tapping out from the inside with a large wooden dowel or flat-ended punch. Be careful to push on the bearing cups and not the bearings themselves. Once the cups are removed, simply install a 3.5mm spacer on each side between the bottom bracket cups and bottom bracket shell, then press the cups into the BB and install the cranks.

We recommend using a SRAM press fit bottom bracket instead of the standard Specialized BB to ensure correct chainline.

In some cases, it might be necessary to use one or more of the included Wheels Mfg. CRANK-SPC spacers to adjust the chainline.

All Wheels Mfg. products have a lifetime warranty and are 100% guaranteed to work for you upon purchase. We accept returns or refunds only if purchased directly from us. For a refund, a product must be purchased directly from Wheels Mfg. and must be returned in new condition with original packaging and receipt. Email us ( or call (1-800-361-8422) for a Return Authorization number. Freight charges to Wheels Mfg. are the responsibility of the customer.

We accept products purchased through Wheels Mfg. Authorized Resellers for exchange only. For refunds, please return the product to that Reseller. If the product was purchased from an internet seller or local bike shop, please return the product to them for exchange or refund.

Wheels Mfg will replace or refund defective products at our discretion.