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EXT ERA V2.1 - HS3 Hybrid Enduro Fork

The EXT ERA V2.1 is the pinnacle of single-crown fork technology, bringing World Rally Championship (WRC) engineering to the mountain bike world. It is a boutique alternative to the Fox 38 or RockShox Zeb, uniquely using a hybrid coil-and-air spring system to provide the stiction-free start of a coil with the tunable ramp-up of air.

The "2.1" update focuses on refined internal friction, a lighter rebound tune, and an updated floating axle system for perfect lower-leg alignment.

The ERA V2.1 is built around the HS3 (Hybrid Spring System). While most forks use a single positive air chamber, the ERA uses two (+ and ++) plus an integrated coil negative spring. This allows you to run a lower main pressure for incredible small-bump "flutter" sensitivity while using the second chamber to create a rock-solid mid-stroke that prevents the fork from diving under heavy braking or on steep chutes.

WRC Heritage

EXT uses a unique Thixomolding process for the magnesium lowers, resulting in a denser, higher-strength material than standard casting. This is paired with an anti-creak crown design featuring a 5cm steerer-to-crown interface (compared to the industry standard of 3cm), making it one of the stiffest 36mm forks ever tested.

CHOOSE SIZE

140

150

160

170

Price (select options)

£1,590.00

e: / t: 01323 737320

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Months	12	24
Purchase Cost	£1,590.00	£1,590.00
APR	11.90%	11.90%
Deposit %	10.00%	10.00%
Deposit amount	£159.00	£159.00
Loan amount	£1,431.00	£1,431.00
Pay per month	£126.67	£66.89
Total payable	£1,679.04	£1,764.36

THE DETAIL

HS3 Hybrid Spring: Two adjustable positive chambers (+ and ++) combined with a high-volume self-activating negative chamber and a coil spring for zero stiction.
RLP (Radial Lubrication Pocket): Specialized DU bushings with internal "dimples" that trap oil against the stanchion, ensuring the fork stays smooth even under massive side-loading.
HDRV Damper: High Dynamic Response Valve with two separate shim stacks for mid and high speed, ensuring the fork reacts instantly to square-edge hits.
Floating Axle: Decouples the hub width from the fork alignment, ensuring the legs remain perfectly parallel for minimal friction.
The Brake Match: Because the ERA is exceptionally stiff, it pairs perfectly with high-power brakes like the Hope GR4 bundle and 220mm rotors. The fork's mid-stroke support means it won't "nose-dive" even under the massive deceleration of the Magura system.
Setup Tip: Start with the "++" chamber at approximately 1.5x the pressure of the "+" chamber. This is the "sweet spot" that gives the ERA its legendary "hovercraft" feel over roots and rocks.
Maintenance: Every ERA is hand-assembled with EXT proprietary oil. To maintain the "WRC feel," we recommend a lowers service every 50 hours using only EXT-specified lubricants.

SPECIFICATIONS

Specification	Detail	Notes
Stanchion Diameter	36mm (Variable Wall)	High-stiffness 7000-series alloy.
Spring System	HS3 Hybrid (Air Coil)	Triple-chamber: +, ++, and Negative.
Damper	HPC High Volume Cartridge	22mm piston; fully independent circuits.
Adjustments	HSC, LSC, LSR	High/Low Speed Comp. and Rebound.
Travel Options	130mm to 170mm	Internally adjustable in 10mm steps.
Wheel Size	29" Only	Optimized for modern enduro geometry.
Offset	44mm	Standard for high-stability steering.
Axle	15x110mm Boost	Floating axle design; Torque Cap compatible.
Brake Mount	Post Mount 180mm	Direct mount (Max 220mm rotor).
Weight	?2,275g	Uncut steerer, includes axle and lube.
UK Price	?�1,590.00	Hand-built and custom-tuned in Italy.

Specification	Detail
Stanchion Diameter	36mm (Variable Wall)
Spring System	HS3 Hybrid (Air Coil)
Damper	HPC High Volume Cartridge
Adjustments	HSC, LSC, LSR
Travel Options	130mm to 170mm
Wheel Size	29" Only
Offset	44mm
Axle	15x110mm Boost
Brake Mount	Post Mount 180mm
Weight	?2,275g
UK Price	?�1,590.00

Specification	Notes
Stanchion Diameter	High-stiffness 7000-series alloy.
Spring System	Triple-chamber: +, ++, and Negative.
Damper	22mm piston; fully independent circuits.
Adjustments	High/Low Speed Comp. and Rebound.
Travel Options	Internally adjustable in 10mm steps.
Wheel Size	Optimized for modern enduro geometry.
Offset	Standard for high-stability steering.
Axle	Floating axle design; Torque Cap compatible.
Brake Mount	Direct mount (Max 220mm rotor).
Weight	Uncut steerer, includes axle and lube.
UK Price	Hand-built and custom-tuned in Italy.