No, this freehub body is engineered specifically for the standard UNAAS Pro hub shell (Pro D40 / Pro D50) and is not confirmed to be interchangeable with the UNAAS Pro 2, HARD, HARD2, or HARD SE models, since hub internals and ratchet interfaces can differ between UNAAS product lines. A separate Pro 2-specific ceramic XDR freehub is also available from DoGoodCo for Pro 2 owners. If you are unsure exactly which UNAAS wheel model you own or which freehub it needs, please contact our support team with your order details before purchasing to avoid an incompatible fitment.

SRAM XDR is the freehub body standard used on SRAM's modern 12-speed road and gravel AXS groupsets, distinct from the older XD standard and from Shimano's freehub interface. You would need this XDR freehub body if you are switching your UNAAS Pro wheelset from a Shimano or SRAM 11-speed drivetrain to a SRAM 12-speed AXS groupset, or if you are building a new bike around SRAM 12-speed shifting and already own a UNAAS Pro wheel with a different freehub fitted. Correct freehub selection is essential for proper cassette seating and shifting performance, so double-check your groupset's exact requirement before ordering.

Ceramic bearings typically offer lower rolling resistance and a noticeably smoother, freer-spinning feel while coasting compared with standard steel bearings, along with better resistance to heat build-up under sustained load. The gains are a genuine, if marginal, efficiency benefit rather than a dramatic performance transformation, and ceramic bearings still need proper sealing and periodic servicing to perform well over the long term, particularly in humid Indian conditions. This upgrade appeals most to performance-focused UNAAS Pro riders who want the smoothest possible drivetrain feel from their existing wheelset.

Freehub body swaps are a manageable task for an experienced home mechanic with the correct tools, but we generally recommend having this fitted by a qualified bicycle mechanic given the precision required around the ceramic bearings and internal ratchet mechanism. Incorrect installation, cross-threading, or over-tightening can damage the bearings or freehub engagement, and such damage would not be treated as a manufacturing defect. If you are not confident doing this yourself, your local bike shop or DoGoodCo's service partners can assist with correct fitment.

Yes, this is a genuine Winspace-manufactured freehub body sold directly by DoGoodCo, not a generic aftermarket copy. As a standalone spare part rather than a complete wheelset, this freehub body does not carry the 1 to 2 year wheelset warranty that applies to full UNAAS wheelsets, and is instead covered only by standard protection against manufacturing defects at the time of purchase, consistent with how individual freehub bodies and components are handled across the Winspace and UNAAS range. If you receive a defective unit, contact DoGoodCo promptly with your order details so we can assist.

Ceramic bearing freehub bodies are best kept as dry as possible, so avoid pointing high-pressure water jets directly at the hub when washing your bike, particularly during monsoon rides where wheels see more standing water and road spray. Wipe the freehub body and surrounding hub area down after wet rides, and have the bearings and pawl engagement checked periodically, more often if you ride frequently in wet weather. Prompt drying after rain and appropriate light lubrication will help the ceramic bearings and ratchet mechanism last through the monsoon season and beyond.

Orders are typically dispatched within 3 working days of order confirmation. Total delivery time after dispatch depends heavily on your specific location and pin code, so we cannot promise an exact day-count range, but we will share courier tracking details as soon as your order ships. Please note all orders on DoGoodCo are prepaid at checkout, and cash on delivery is not available for this product.