A striking balance of light weight and exceptional downhill performance, the new SID finds a new level of confidence and defines what modern XC race bikes are capable of. The new SID Ultimate is built with more travel, an all-new stiff 35mm chassis that features Rockshox lightest damper to date, the new Charger Race Day. This race-ready package also includes the redesigned DebonAir air spring, tuned specifically for the demands of XC riders

  • The definition of a modern XC mountain bike fork
  • Balances light weight, consistent support and exceptional performance on descents
  • Stiff 35mm chassis
  • Lightweight Race Day Charger damper
  • Specially XC tuned Debonair spring
  • 29" wheel size
  • 120mm travel
  • 15mm x 110mm boost
  • 44mm offset
  • Long lasting, Ultra-low friction SKF wiper seals
  • Available with or without Twistloc remote lock-out

Rockshox SID Ultimate Race Day Fork 2021

Rated 5.0 out of 5 stars
1 Review

A striking balance of light weight and exceptional downhill performance, the new SID finds a new level of confidence and defines what modern XC race bikes are capable of. The... Read more

£966.00 £694.95

Select Colour
  • Black Black
  • Blue Blue
Size Please select
  • 29, Boost, 120mm
Option Please select
  • No Remote
  • With Remote


Delivery Information

We have a range of delivery options on orders. Most importantly, if your order is over £40 then delivery is free!

All Biketart orders are fully trackable. You will get a tracking number by email when your order is shipped.

Delivery Services

Standard Tracked: All orders over £40 are eligible for free standard tracked delivery by Royal Mail. For orders under £40 there is a £2.99 charge. Orders sent using standard tracked are usually delivered in 2-3 days.

Priority Tracked: For £3.99 your order is sent by premium tracked delivery which gives a 1-2 day (including Saturdays) delivery timescale. This service is provided by Royal Mail who will usually deliver on Saturdays. Orders must be placed by 4pm.

Next Day Courier: If you require next-working-day delivery then this is provided by DPD and is £6.99. Orders must be placed by 3.30pm and be fully in-stock in order to be processed before our daily DPD collection.

Saturday Delivery: You can select Saturday delivery options from DPD at the checkout.

Bike Delivery: Bikes are always delivered by courier. After placing a bike order your bike is fully assembled and tested before being carefully boxed for shipping. Because of this build process it is not always possible to offer next-day delivery on a bike. Please do get in touch if you want to know a specific despatch day on any bike on our website. Call us on 01227 832582 or email

Returns Info

We offer a 30 day return period on our items. We ask that items are returned in their original packaging and in re-sellable condition. We do not pay returns postage.unless we have made an error with your order.

We cannot accept the return if the item is not correctly packaged and is damaged in transit during the return trip back to us.

    Please do not stick any tape or labels to the products branded outer packaging.

      If you require an exchange it is recommended that you re-order the correct size/item and return the item you do not wish to keep to us for a refund.


        Rated 5.0 out of 5 stars
        Based on 1 review
        Total 5 star reviews: 1 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
        100%would recommend this product
        1 review
        • J
          Verified Buyer
          I recommend this product
          Rated 5 out of 5 stars
          33 seconds ago
          Super light fork

          Bought to replace a rigid fork I have been using this winter. It is very light and only 200g heavier than the rigid fork. Looking to fit it once the trails dry out again.

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