RockShox SID Lower Leg
Best performance upgrade for serious cross country and trail riders.
Restore your suspension performance with this genuine replacement lower leg assembly. Designed specifically for the B4 generation, it ensures a perfect fit and factory-spec durability for your high-performance mountain bike fork.
$292.00
at
Airpark Bike Co
More SID options
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$1099.00
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RockShox SID SL D1 Lower Leg
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RockShox SID Charger Race Day
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RockShox SID SL Flight Attendant
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RockShox SID SL
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RockShox SID SL Select
$759.00
RockShox SID SL Flight Attendant
$1499.00
RockShox SID SL Select
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RockShox SID SL Race Day 2
$899.00
RockShox SID SL Race Day 2
$899.00
RockShox SID SL Race Day 2
$899.00
RockShox SID SL Select
$689.00
RockShox SID Select
$869.00
RockShox SID SL Select
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RockShox SID SL Race Day 2
$899.00
RockShox SID SL Select
$759.00
RockShox SID SL Remote E1
$989.00
RockShox SID Lower Leg
$320.00
RockShox SID C1 CSU
$370.00
RockShox SID SL Crown/Steerer/Uppertube
$370.00
RockShox SID SL D1 CSU
$370.00
RockShox CSU for SID
$370.00
RockShox Lower Leg for SID SL
$320.00
RockShox SID Lower Leg
$320.00
RockShox SID D1 Lower Leg
$320.00
RockShox SID SL Remote E1
$989.00
RockShox SID SL
$989.00
RockShox SID SL Select E1
$759.00
RockShox SID SL Race Day 2
$899.00
RockShox SID SL Race Day 2
$899.00
RockShox SID Select
$869.00
RockShox SID Lower Leg
$320.00
RockShox SID SL Damper
$230.00
RockShox SID SL Select
$759.00
RockShox SID SL Remote E1
$989.00
RockShox SID SL E1
$989.00
RockShox SID SL Select
$759.00
RockShox SID SL E1
$989.00
RockShox SID SL Remote E1
$989.00
RockShox SID Damper
$230.00
RockShox SID Remote
$1099.00
RockShox SID SL Select RL Suspension Fork
$759.00
RockShox SID CSU
$264.99
RockShox SID Suspension Fork
$1099.00
RockShox SID SL Suspension Fork
$989.00
RockShox SID Suspension Fork
$1099.00
RockShox SID Suspension Fork
$1099.00
RockShox SID SL Select Suspension Fork
$759.00
RockShox SID Select+ Fork / SIDLuxe Select+ Shock
$940.00
Who it's for
- Mountain bikers seeking improved steering precision and trail control.
- XC racers and weight-conscious riders prioritizing climbing speed.
- Aggressive trail riders and those demanding long-term component reliability.
Who should skip it
- Budget-conscious riders or those seeking more affordable upgrade options.
- Beginner mechanics or riders without specialized bike tools.
- Riders with non-RockShox SID Ultimate forks looking for upgrades.
Performance breakdown
Structural Integrity
Forged construction ensures maximum stiffness under aggressive cross-country riding loads.
Factory Compatibility
Exact OEM specifications guarantee a seamless fit for SID Ultimate forks.
Weight Optimization
Lightweight chassis design maintains the race-ready feel of high-end builds.
Installation Ease
Straightforward swap for experienced mechanics familiar with suspension service intervals.
Finish Durability
Gloss black coating resists trail debris and maintains a professional aesthetic.
Tracking Precision
Boost spacing geometry provides the tracking stability required for technical trails.
Key Specs
Weight
453.59 grams
Wheel Size
29 inches
Axle
15x110mm Boost
Travel
80-100mm
Compatibility
SID Ultimate B4 (2020+)
Color
Gloss Black
Manufacturer Part Number
11.4018.091.014
Know before you buy
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