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Item # RSX004T

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  • Diffusion Black, 1.5T, 15x110mm Maxle Ultimate ($898.99)
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Item # RSX004T

Stiffness, boosted.

The 5.5in travel of RockShox's Pike RCT3 Solo Air 140 Boost Fork for 27.5in wheels appeals to the enduro-minded trail riders who also enjoys serving as their own shuttle to the top. The oversized Boost 148mm axle supports both impulses, making for a stiff front end for more efficiency while torqueing up climbs and better line-sticking tracking while bombing down the other side. The Power Bulge feature involves a reinforced lower leg and oversized bushing, which further increases stiffness without increasing stanchion size.

Despite the new axle standard, the Pike still features the same Solo Air spring, and it's paired with a three-position RCT3 charger switch to adjust the damper, letting you choose discreet amounts of lockout for big hits and fast roll-overs, rock gardens and root lattices, or locked-out speed for climbing and sprinting. While riding the fork open, the Rapid Recovery feature indulges the Pike's terrain-gobbling tendencies by keeping recovery short between hits, so you'll always have that cushion, even through successive bumps.

Tech Specs

140 mm
Stanchion Material:
Fast Black-coated aluminum
Lower Material:
Crown Material:
7050 aluminum
Wheel Size:
27.5 in
Steer Tube Diameter:
1-1/8 - 1-1/2 in
Stanchion Diameter:
35 mm
Spring Type:
Solo Air
rebound, low-speed compression, 3-position compression
15 x 110 mm Boost
Max Rotor Size:
200 mm
Brake Compatibility:
Actual Weight:
Diffusion Black, 1.5T, 15x110mm Maxle Ultimate: 1980g
Recommended Use:
mountain bike
Manufacturer Warranty:
2 years

Reviews & Community


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  • Familiarity: I've used it several times

I chose the Pike RCT3 140 boost fork for my Santa Cruz 5010. Loving the 130 in the rear and 140 up front. Makes the 5010 that much more of a Enduro machine. Dialing in the rebound after knowing a specific section of trail has been a game changer. The extra lateral stiffness of the boost really excels in the tight corners and curves. Give me a shout if you want to talk shop.


What is the difference between shis Pike and Item #RSX004Y?

Hey Jason - This Pike RCT3 is for a 27.5" wheel while Item #RSX004Y is for 29" and 27.5" + wheels. What bike are you looking to put the fork on? Feel free to contact me directly with any additional questions.

Kyle L. - Expert Gearhead - klivingston@backcountry.com