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The Praxis M30-THRU BB is designed for installing Doon and Lyft cranks into BSA threaded frames, featuring 30mm drive and non-drive bearings.
The Praxis M30-THRU BB is designed for installing Doon and Lyft cranks into BSA threaded frames, featuring 30mm drive and non-drive bearings.
Praxis Works

Praxis Works M30 Thru 68mm/73mm BSA Bottom Bracket in Silver

£54.99
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With Pre-Order, you can purchase the latest items added to our store in advance of them arriving with us.

Your Pre-Order is prioritised (at no additional charge); meaning that as soon as the product arrives with us, we can wrap it straight back up; ready for collection via Click & Collect or despatch to you — it often never even hits the stock room shelves!

Pre-Launch

With Pre-Launch, the date when we expect to receive the product ourselves is still a little too hazy to be confident in accepting Pre-Orders.

So, instead, you can submit your email address against the item you are interested in and we will email you as soon as stock arrives on the system.

Estimated Delivery & Collection Dates

Estimated Delivery & Collection Dates are given on Pre-Order and Pre-Launch products. They are for indication purposes only and can change at any time without notice.

The dates we provide are based on indications given by our suppliers. Whenever we get updated information from our suppliers we will endeavour to update the Estimated Delivery & Collection Dates provided on product pages.

We estimate this will be ready for despatch to you or collection via Click & Collect on Undetermined
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Returns & Replacements

We want you to be completely satisfied with your purchase. If something isn’t right, here’s how we can help:


🕒 Returns Window

  • Parts, Accessories & Clothing: Return within 30 days (in-store or online)
  • Bikes & Frames: Return within 30 days (online orders only)

📦 Return Conditions

To be eligible for a return:

  • Items must be unused, unfitted, and in resale condition
  • Returned in original, undamaged packaging
  • Properly packed to prevent damage in transit
    (Contact us if you need packaging advice)

⚠️ Important:
Please do not attach labels or tape directly to retail packaging — wrap the item securely first.


🚚 Returning Your Item

Online Orders

  • Customers are responsible for return postage costs
  • We recommend using a tracked/recorded delivery service
  • If the item is faulty, damaged, or incorrect, we will:
    • Refund reasonable return postage costs
      (Excludes premium/special delivery or international shipping)

In-Store Purchases

  • Must be returned to the original store of purchase
  • Collection will also be from that store

⚠️ Important Information

  • Return requests must be submitted in writing or via email
  • We are not responsible for loss, time, or costs incurred during returns (including warranty returns)

🔧 Non-Returnable Items

We do not accept returns on:

  • Custom bike builds
  • Used or ridden bikes
  • Custom or made-to-order items

📌 Special Orders

Items ordered specifically for a customer (not held in stock):

  • May incur a restocking fee if cancelled
  • Or loss of deposit

📝 How to Start a Return

Please complete our Returns Form to begin the process.

Praxis Works M30 Thru 68mm/73mm BSA Bottom Bracket in Silver

Brand:Praxis Works

Code:PR-68-4203

The Praxis M30-THRU BB is designed for installing Doon and Lyft cranks into BSA threaded frames.

This bottom bracket features a 30mm drive and 30mm non-drive bearing. It is also compatible with other brand 30mm cranks, including SRAM, RaceFace/Easton Cinch cranks, Rotor Rex/3D+ cranks, and CaneCreek eeWings.

Features:

  • Designed for installing Doon and Lyft cranks into BSA threaded frames
  • 30mm drive and 30mm non-drive bearing
  • Compatible with 30mm cranks from brands such as SRAM, RaceFace/Easton Cinch, Rotor Rex/3D+, and CaneCreek eeWings
Technical Information
  • Measurement
    68mm (Road), 68/73mm (MTN)
  • Bearings
    Cartridge steel or ceramic
  • Bearing size
    30mm drive / 30mm non-drive
  • Ceramic rating
    Grade 5 / ABEC 5
  • Tool
    M30 socket tool or M30 wrench tool
  • Material
    Forged and machined heat-treated alloy
  • Weight
    100g
  • Spindle measurement
    103mm or longer (Road), 108mm or longer (MTN)
Sizing Information
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