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WISHBONE OSBB Ceramic Bottom Bracket | 46mm ID x 61mm Width | For Specialized Venge, Tarmac SL4, Shiv | Shimano HT2 / SRAM DUB Compatible
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The WISHBONE OSBB Ceramic Bottom Bracket is designed for Specialized carbon road bikes with an oversized but narrow PF30-style shell (46mm ID x 61mm width). Works with Shimano HTII, SRAM DUB, Praxis M30 & Campagnolo. Backed by a 2-year warranty.
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⚙️ Product Details: WISHBONE OSBB Ceramic Bottom Bracket

Introducing the WISHBONE OSBB Ceramic Bottom Bracket — a high-performance crank bearing system built specifically for Specialized carbon frames using the OSBB standard , which features a 46mm inner diameter and a 61mm shell width .

 

This bracket was originally designed for models like:

  • Specialized S-Works Tarmac SL4
  • Venge
  • Shiv
    From 2011–2014 , these frames used a unique variant of PF30 that’s slightly narrower than standard PF30 shells — making the WISHBONE OSBB series the ideal upgrade for smoother performance and longer life.
 

🔧 Full Specifications

Feature
Specification
Model
SPF3024CS / SPF3025C / SPF3025P / SPF30-DUB / SPF30-M30 / SPF30C
Shell ID
46 mm
Width
61 mm(narrower than standard PF30)
Bearing Type
High-quality Ceramic Bearings – low drag & high durability
Sealing System
Integrated Double Sealing – dustproof & water-resistant
Weight
As light as100g– up to115g(varies by model)
Finish
Matte Black – sleek and modern
Compatibility
Shimano HTII, SRAM GXP/DUB, Praxis M30, FSA BB386EVO, Campagnolo systems via adapters
Installation Tool Required
PF30 Tool (50.3mm)
Disciplines
Road Cycling, Triathlon, Track Racing
Warranty
2 Years from authorized dealers

⚙️ Key Features

  • Premium Ceramic Bearings : Ensures ultra-smooth operation and reduced mechanical drag
  • Multi-Crank Compatibility : Supports Shimano HTII, SRAM GXP/DUB, Praxis M30, and more
  • Double-Layer Dust/Water Protection : Keeps contaminants out and extends service life
  • Lightweight Design : Starting at just 100g – perfect for race-focused builds
  • Threaded Shell Fit : Designed for Specialized OSBB Carbon Frames
  • Noise-Free Performance : Eliminates creaking often found in stock plastic cups
  • Narrow Bearing Stance : Optimized Q-factor for improved comfort and efficiency
  • Built for Longevity : Ideal for riders who want minimal maintenance
 

📐 Compatibility Chart

Model
Crank Compatibility
Weight
SPF3024CS
Shimano HollowTech II (24mm)
100g
SPF3025C
SRAM GXP
105g
SPF3025P
Campagnolo Ultra Torque
110g
SPF30-DUB
SRAM DUB
115g
SPF30-M30
Praxis M30
110g
SPF30C
FSA BB386EVO
107g

Perfectly engineered for Specialized OSBB carbon frames , including early Tarmac SL4 , Venge , and Shiv road bikes.

 

💵 Price Overview (Please Inquire for Exact Pricing)

Model
Approximate Retail Price
SPF3024CS
$95 USD
SPF3025C
$95 USD
SPF3025P
$95 USD
SPF30-DUB
$105 USD
SPF30-M30
$105 USD
SPF30C
$105 USD

Available through premium bike shops and global distributors in Thailand and beyond.

 

🛠️ Recommended Installation Tools

  • PF30 Tool (50.3mm) – for all Wishbone OSBB models
    (Tools are sold separately – please confirm with your retailer)
 

📦 Who Is It For?

  • Owners of Specialized carbon road bikes (Venge, Tarmac SL4, Shiv)
  • Riders upgrading from original plastic OSBB bearings
  • Cyclists seeking smooth, quiet drivetrain performance
  • Bike builders working with OSBB frames
  • Anyone looking to reduce creaking and flex on older OSBB setups
 

📊 SKU & UPC Reference

Model
SKU Code
UPC Code
SPF3024CS
WB-BFPF-069BK-ABK
4712899711986
SPF3025C
WB-BFPF-070BK-ABK
4712899711993
SPF3025P
WB-BFPF-072BK-ABK
4712899712013
SPF30-DUB
WB-BFPF-071BK-ABK
4712899712006
SPF30-M30
WB-BFPF-073BK-ABK
4712899712020
SPF30C
WB-BFPF-074BK-ABK
4712899712037

📌 Why Choose WISHBONE OSBB Ceramic Bottom Bracket?

  • Ultra-Smooth Ceramic Bearings – for fast, efficient pedaling
  • 2-Year Warranty – from official retailers
  • Engineered for Specialized OSBB Frames – fits 46x61mm shells perfectly
  • Reduces Flex & Noise – upgrades stock plastic cups for better stiffness
  • Lightweight Build – enhances speed without sacrificing strength
 

If you're running a Specialized OSBB carbon frame from the early Tarmac SL4 , Venge , or Shiv , the WISHBONE OSBB Ceramic Bottom Bracket is the ultimate solution for improving power transfer , stiffness , and long-term reliability .

 

Designed to replace aging plastic bearings and offer real-world gains, this bracket ensures smooth, silent performance and is built for both training and racing conditions.

WISHBONE OSBB Ceramic Bottom Bracket | 46mm ID x 61mm Width | For Specialized Venge, Tarmac SL4, Shiv | Shimano HT2 / SRAM DUB Compatible
WISHBONE OSBB Ceramic Bottom Bracket | 46mm ID x 61mm Width | For Specialized Venge, Tarmac SL4, Shiv | Shimano HT2 / SRAM DUB Compatible
WISHBONE OSBB Ceramic Bottom Bracket | 46mm ID x 61mm Width | For Specialized Venge, Tarmac SL4, Shiv | Shimano HT2 / SRAM DUB Compatible
WISHBONE OSBB Ceramic Bottom Bracket | 46mm ID x 61mm Width | For Specialized Venge, Tarmac SL4, Shiv | Shimano HT2 / SRAM DUB Compatible
WISHBONE OSBB Ceramic Bottom Bracket | 46mm ID x 61mm Width | For Specialized Venge, Tarmac SL4, Shiv | Shimano HT2 / SRAM DUB Compatible
WISHBONE OSBB Ceramic Bottom Bracket | 46mm ID x 61mm Width | For Specialized Venge, Tarmac SL4, Shiv | Shimano HT2 / SRAM DUB Compatible
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Return/Refund Policy

  1. The company accepts product returns or exchanges within 7 business days from the date the customer signs for the delivery. If this period has passed, the company reserves the right to decline any returns or exchanges.

  2. Products to be returned or exchanged must be in their original condition, undamaged from use, and unaltered. This includes retaining the price tags, brand tags, original bicycle box, manuals, and packaging in the same condition as when delivered. Proof of purchase, photographic evidence, and a confirmation document from the service center verifying the damage must also be provided.

  3. Shipping costs for returns, exchanges, or repairs at the main office must be borne by the customer in all cases. Shipping fees are non-refundable.

  4. Please record a video while unboxing the received product as evidence. Without such a video, the company reserves the right to decline any returns or exchanges.

Customers may return or exchange products under the following conditions:

  1. The product is the wrong model, color, or size.
  2. The product differs significantly from or does not resemble the images displayed on the product detail page.
  3. The product is damaged, defective, or non-functional upon receipt.
  4. The company reserves the right to inspect the condition of returned products before dispatching a replacement.
  5. Returns or exchanges are not accepted in cases where:
    • The customer is dissatisfied with the product.
    • The customer wishes to exchange for a different model.
    • The customer ordered the wrong model.
    • The bicycle has been assembled and test-ridden.
  6. The company reserves the right to accept returns or exchanges only under the policies and conditions set by the company.
  7. Shipping fees are non-refundable in cases of product refunds.
  8. For bicycles shipped in boxes, the assembly will be completed up to 85%, and assembly fees are not included.

Customers must notify the company immediately upon discovering any product issues via the following channels:

  • Tel: 094-7031888
  • Email: 888bike1@gmail.com
  • Hours: 10:00 AM–7:00 PM daily (excluding Sundays and public holidays).

Return/Exchange Policy for Products within 7 Days

  1. The 7-day return/exchange warranty starts from the day the customer receives the product, counted as Day 1, regardless of the time of receipt.

    • Example:

      • Customer 1 receives the product on Day 1 at 11:00 AM.
      • Customer 2 receives the product on Day 1 at 6:00 PM.
      • The warranty period for both customers starts on Day 1 and ends on Day 7.
    • Exchanges are limited to the damaged product only. If accessories are damaged, they will be repaired instead of replaced.

    • Proof of purchase (receipt or tax invoice) is required for product exchanges. The product must be returned in its original box with all accessories intact.

    • Damaged products must meet the warranty conditions and be in the specified condition.

  2. For products with unclear or intermittent issues that are not immediately apparent during initial inspection, the company reserves the right to evaluate them under its conditions.

  3. The inspection process for returned or repaired products may take approximately 15-20 business days.


Refund Policy

  1. For customers who paid in full or in installments via credit cards issued by registered banks in Thailand, refunds will be credited back to the same card used for payment. This process takes approximately 30 business days from the date the customer is notified by the call center, depending on the credit card billing cycle of the issuing bank.

  2. For customers who paid in full via counter service or cash on delivery, refunds will be transferred to the bank account provided by the customer. This process takes approximately 30 business days from the date the customer is notified by the Call Center (Tel: 094-7031888).

  3. The company reserves the right to extend the refund period beyond the stated timeframe in cases of force majeure.

  4. The company reserves the right to amend any terms and conditions without prior notice.


Shipping and Assembly

For online orders, such as bicycles, the product will be shipped pre-assembled up to 85% and packed in durable boxes.


Warranty for Bicycles

The warranty period is as follows:

  • Standard Frame: 1 year
  • Paintwork: 1 year
  • OEM Parts: Warranty conditions depend on the respective brand.
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ร้าน888bike
888bike
Welcome to 888Bike – Your Trusted Cycling Partner Greetings, and thank you for visiting 888Bike, the premier online destination for bicycles and cycling accessories. Established in 2009, we are proud to serve cyclists across Thailand and beyond with two convenient branches: one in Chiang Rai (Phan District) and another in Chiang Mai. At 888Bike, we are committed to providing a comprehensive selection of high-quality bicycles and accessories from leading global brands. Whether you're a beginner, a casual rider, or a professional cyclist, we have everything you need to enhance your cycling experience. Our team of highly trained technicians are true bicycle experts, ready to assist you with professional advice and exceptional support. When you shop with us, you can do so with complete confidence. Simply give us a call at 094-7031888—we’re available anytime to help you find the perfect product for your needs. We take immense pride in delivering outstanding customer service and ensuring 100% satisfaction with every purchase. Your happiness is our top priority, and we stand by our commitment to making your shopping experience seamless and enjoyable. For our international customers, we are pleased to offer shipping to all ASEAN countries, making it even easier for you to access our premium products and services. 888 INTERTRADE PARTNERSHIP Discover the joy of cycling with 888Bike—where passion meets excellence.
Mobile number : 0947031888
E-mail : 888bike1@gmail.com
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