The Fox MY27 34 SL Factory 29" Suspension Fork with GRIP X is built for modern XC and downcountry riders who want a more confidence-inspiring front end without jumping to a heavier trail fork. With up to 130mm travel in a full-width 34mm chassis, it targets the higher speeds, bigger compressions, and sharper lines common on today’s technical XC courses and aggressive singletrack, while keeping weight gain minimal versus the prior 34 Step-Cast generation.
Race-to-downcountry upgrade highlights
Full-width 34mm chassis stiffness - A generative design-aided arch and crown deliver a claimed 17% increase in stiffness over the previous 34 Step-Cast (34 SC), with a claimed 3% weight increase, for more precise steering when pushing hard through rock gardens and high-load corners.
20mm increased bushing overlap - Reduced friction and improved fore/aft rigidity with no increase in axle-to-crown length (vs. 34 SC), helping the fork track cleaner through repeated hits while maintaining fit consistency.
Trail-optimized 3-way adjustable GRIP X damper - An updated tune delivers ultra-quiet movement and a notably controlled ride feel, giving riders meaningful adjustment range for everything from smooth XC speed to rough, technical downcountry lines.
Longer air spring with larger negative volume - Tuned to mirror the 34 LT for a more supple initial stroke while retaining the 34 SC’s supportive mid-stroke and end-stroke, improving traction without sacrificing support when loading the front end.
Kashima-coated upper tubes - Adds smoothness and durability where it matters most for long-term small-bump sensitivity and consistent performance in varied conditions.
Generatively designed 7000-series aluminum crown - External machining and larger-diameter internal bores remove material efficiently, keeping weight in check without compromising the fork’s intended stiffness targets.
Specifications & Identifiers
Axle to Crown
540.5
Brake Type
Post Mount 180
Color
Black, Shiny Black
Crown Race
40mm
Designed for ebike
No
External Adjustments
High Speed Compression Damping, Low Speed Compression Damping, Rebound Damping
Fork Rake
44mm
Front Axle Type
15mm Thru x 110mm
Front Hub Spacing
110mm
Maximum Tire Width
63.5
Negative Spring
Air
S.H.I.S. Stem Clamp
28.6 Threadless
Spring
Air
Steerer Tube
Tapered
Travel (mm)
130
Wheel Size
29er
Shiny Black - 130mm UPC
821973526317
Shiny Black - 130mm MPN
910-21-448
Tree Fort ID:
333222476629
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