RockShox 32mm Crown/Steerer/Uppertube Assemblies FORK CSU - DEBONAIR 27/29 BOOST 42 OFF-SET ALUMINUM TAPER DIFFUSION BLACK SID ULTIMATE 80-100MM (2020+). Model ID: FS-SPP-A0.

RockShox SID Ultimate DebonAir Fork CSU 80-100mm | Boost 15x110mm, Tapered 42mm Offset

Reference Number: 7Q59V7

Experience superior ride quality and advanced suspension performance with the RockShox CSU - SID Ultimate 80-100 mm DebonAir (2020+) mountain bike fork. Specifically engineered for cross-country racers and trail riders seeking lightweight agility and precision, this high-performance component offers outstanding durability, innovative damping technology, and versatile fitment for a variety of XC setups.

Materials & Construction:

Constructed from premium aluminum with a 32mm crown, steerer tube, and upper tube assemblies, the SID Ultimate is designed for lightweight strength and stiffness. Its sleek black diffusion finish enhances durability and corrosion resistance, ensuring long-lasting performance in challenging trail conditions. The tapered steerer tube provides optimal steering precision and compatibility with modern frame geometries.

Performance & Engineering:

Powered by RockShox's renowned DebonAir air spring technology, the SID Ultimate delivers a plush, controllable ride with excellent small-bump sensitivity and consistent performance across varied terrain. The 80-100mm travel range offers versatile XC handling, enhancing both climbing efficiency and descending control. The Boost 15x110mm spacing maximizes front wheel stiffness and wheel compatibility, making this fork ideal for aggressive, fast-paced riding.

Components & Technology:

Equipped with a 42mm offset for nimble steering and responsiveness, the fork features tapered alloy steerer tubing for increased stability and improved handling. The CSU (Control Shaft Unit) design ensures optimal alignment and durability under high-impact conditions. Additionally, 's model ID FS-SPP-A0 guarantees precise damping adjustments tailored to your riding style, providing seamless lockout and support for climbing or aggressive descents.

Style & Use Case:

Designed for cross-country racing and aggressive trail riding, the SID Ultimate 80-100mm DebonAir fork is the perfect choice for riders demanding lightweight performance without sacrificing durability or advanced engineering features. Its sleek black finish and modern geometry complement a variety of XC bike frames, making it a versatile upgrade for competitive and serious trail riders alike.

Innovative & Differentiating Features:

- DebonAir air spring technology for exceptional small-bump sensitivity and consistent support

- Tapered aluminum steerer tube for enhanced steering precision and frame compatibility

- Boost 15x110mm spacing for increased wheel stiffness and laterally rigid wheelsets

- Lightweight yet robust construction ideal for XC Racing and trail adventures

- RockShox's renowned damping system with easy adjustments for personalized performance

Upgrade your XC bike with the RockShox SID Ultimate CSU - the ultimate in lightweight, high-performance suspension designed to elevate your riding experience. Whether you're tackling challenging climbs or fast-paced descents, this fork provides the reliable suspension and precision handling needed to conquer any trail.

Keywords: RockShox SID Ultimate, XC fork, DebonAir, 80-100mm travel, tapered steerer, Boost 15x110mm, cross-country suspension, lightweight mountain bike fork, trail riding, high-performance fork, damping technology

  • Designed with DebonAir air spring technology for enhanced small bump compliance and studio-quality control, ensuring a smoother ride across varied terrain.
  • Constructed with lightweight, durable aluminum components, including a 32mm crown and steerer tube, for optimal strength-to-weight ratio and lasting performance.
  • Features a tapered steerer design and 42mm offset to improve steering precision and stability on both cross-country and trail riding, suitable for 29" and 27.5+ wheels.
  • Equipped with Boost 15x110mm (wider) thru-axle compatibility, delivering increased stiffness and improved handling for aggressive riding styles.
  • Innovative geometry and engineering, including the RockShox CSU (Crown, Steerer, Upper Tube) assembly, for easy installation, precise response, and superior ride quality in the 80-100mm travel range.

Why 365 Cycles?

365 Cycles is an Authorized RockShox Dealer, and we offer the Full RockShox Warranty!

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365 Cycles delivers all your cycling needs fast! We don't waste time preparing your order. Our priority is to serve our customers first and foremost. If you need help picking the right product, have questions about bike component compatibility, or just want to geek out about bikes we are here 7 days a week! Simply put, we are bike experts from dirt to tarmac and want to make sure you get the full 365 Cycles experience when you shop with us.

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We’re dedicated to building lasting relationships with our customers, communities, and team members. We combine the knowledge and service of a traditional bicycle shop with the convenience of shopping in your own home.





Shipping & Handling

Most orders placed during the workweek before 1:30 pm EST ship the same day, but in rare cases (peak season/holiday periods) handling time can take up to 48 hours. If you have questions regarding shipping estimates, please let us know prior to placing your order. There is a direct signature requirement for all orders over $500.

Please allow 1-2 business days for your order tracking to update.

  • Cut off for SAME DAY SHIPPING- 1:30 pm EST Monday - Friday
  • Friday afternoon -Sunday orders ship the following Monday
  • Due to carrier restrictions orders shipped to: PO Box, HI, AK, & PR 365 Cycles may use a comparable service to what was selected.

Combined Shipping Discounts

To offer customers savings on shipping, we offer discounts when shipping multiple items from our store. We cannot issue refunds on shipping once an order is finalized so please follow the 5 steps below and ask if you are having trouble with the discount before you make a purchase.

  1. Be sure you are using the US site: https://www.ebay.com
  2. Select Add to Cart (instead of Buy It Now) with items from our store 365Cycles
  3. Click on Proceed to Checkout. On the checkout page, the shipping service on each line item needs to match
  4. Compare First Class vs Priority as sometimes Priority can be cheaper and it gets to you faster!
  5. You’ll need to change the shipping method to Priority on every item in your cart before the rate can be calculated.

Returns

365 Cycles offers returns for 30 days on new items in their original, intact packaging. Return shipping for ALL orders are to be paid by the buyer. Please be sure to read our return policy entirely and if you have any questions, please contact Customer Service.

Full refunds are issued on items that are brand new and we are able to resell as new. 365 Cycles reserves the right to deny returns that are outside of policy including, but not limited to, used items, items missing original packaging, items with damaged manufacturer packaging, or international orders. Return orders must be shipped in a box or bubble mailer. Items shipped without an outer box will incur a restocking fee. You will be contacted through eBay if your return is ineligible for a full refund.

Returns must be initiated within 30 days from purchase date through your Purchase History under My eBay.

If we make an error in shipping, please contact us -- we will ship out the correct item and provide a free prepaid return label as quickly as possible!

Exchanges

If you need to exchange your order, the fastest and easiest way to do this is to reorder. We will ship your new order immediately and, in the meantime, please initiate a return through eBay on the original item and return it. We will refund for the returned item once it is received back.



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Company Details

365 Cycles
1180 Enterprise Rd
East Petersburg, PA 17520
United States

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