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Learn MoreWhether we are serious racers or just weekend warriors, we can all benefit from the premium performance of the RockShox SID Ultimate Race Day 3-Position 29in Boost Fork. Featuring excellent performance for cross-country racers, the SID Ultimate 3-position fork is super lightweight and ultra tunable and has a 3-positon compression switch so we can adjust our compression on the fly for changing trail scenarios. The DebonAir+ air spring offers enhanced small bump sensitivity and mid-stroke support for more performance in the beginning and middle parts of travel. Additional features of the RockShox SID Ultimate Race Day 3-Position 29in Boost Fork include a machined hollow aluminum crown and magnesium lower legs for weight savings and upgraded bushing for a smooth ride.
Travel
110mm, 120mmStanchion Material
aluminumLower Material
magnesiumCrown Material
hollow aluminumWheel Size
29inSteer Tube Diameter
1.5in taperedStanchion Diameter
35mmAxle To Crown
531mmRake
44mmSpring Type
DebonAir+Damper
Charger Race Day 2Adjustability
3-position crownLockout
yesAxle
15 x 110mm BoostBrake Compatibility
hydraulic, post mountRotor Compatibility
[min] 180mm, [max] 220mmIncludes
Bolt-in torque cap adaptersClaimed Weight
[120mm] 3lbs 4.2oz (1480g)Activity
cross-countryManufacturer Part Number
00.4020.957.000