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- Onyx 38 D1 SL Boost Fork (Grey, 29", 170mm, 1.5" Tapered, 15mm TA)
![Onyx 38 D1 SL Boost Fork (Grey, 29", 170mm, 1.5" Tapered, 15mm TA)](https://content.westbrookcycles.co.uk/large/51d26160_onyx4.jpg)
![Onyx 38 D1 SL Boost Fork (Grey, 29", 170mm, 1.5" Tapered, 15mm TA)](https://content.westbrookcycles.co.uk/large/224cd232_onyx3.jpg)
![Onyx 38 D1 SL Boost Fork (Grey, 29", 170mm, 1.5" Tapered, 15mm TA)](https://content.westbrookcycles.co.uk/large/51d26160_onyx4.jpg)
![Onyx 38 D1 SL Boost Fork (Grey, 29", 170mm, 1.5" Tapered, 15mm TA)](https://content.westbrookcycles.co.uk/large/224cd232_onyx3.jpg)
DVO Suspension
Onyx 38 D1 SL Boost Fork (Grey, 29", 170mm, 1.5" Tapered, 15mm TA)
- Spread the cost over 6, 12, 24 or 36 months
- 0% APR Finance available on 6, 12, 24 months for orders over £250
- 0% APR Finance available on 36 months for orders over £1500
- Pay as little as 10% deposit
THE ONYX-REDEFINED.
Experience incredible steering precision, small bump sensitivity, and absolute control with the new Onyx 38. A unique E-Designed chassis, wider-than-ever stance, and burly 38mm stanchions launch the Onyx into a new era of MTB Suspension.
All new demands require all new thinking. The Onyx D1 38 sets a new standard in E-Designed suspension. What does it mean to be specifically E-Designed? For years, the market has taken “acoustic” suspension and made after-thought upgrades in order to make it “E-Bike Approved”. Bumping up compression damping, using a slightly thicker crown, or just saying “Add 10 PSI” isn’t doing it right. E-Specific design means we thought about these needs from day one. How can we make a fork flex equally as one unit? How can we achieve unreal steering precision without the harshness or deflection? How can we control the fore and aft flex issues the added weight of an e-bike puts on a fork? Questions like these were the foundation, the bones of this concept. After years of engineering, different thinking, and countless hours testing, we nailed it. The final result wasn’t only a fork that met all the requirements and needs of a modern, aggressive E-bike, but it directly translated to a regular bike.
Features:
One Unit Chassis Design: We knew what we wanted to achieve in overall performance, we just needed to understand how to get there. Keeping in mind that e-bikes are heavier, faster, and can cover more ground than “acoustic” bikes, the starting point was creating a chassis structure (steer tube, crown, stanchions, and lowers) all as one component. Learning from decades of design, fully optimizing individual parts for weight tends to create an unequal flex pattern in the fork. A “beefed up” crown mated with a thin walled pair of stanchions won’t allow the fork to flex properly. Each critical piece of the chassis was designed to work together, as one unit. Based on our engineering and design efforts, we focused on designing a chassis that was compliant enough to mitigate low & high frequency vibrations while dispersing the energy waves throughout the entire chassis structure. This delivers unmatched confidence in terms of traction, braking, steering precision and comfort no matter what kind of bike you are riding.
D1 Damper: After achieving our performance goals with our chassis design, we had a clear view on how our damper needed to perform. Since the chassis delivered incredibly smooth sliding performance, the upgraded D1 damper became an easy project to undertake. Targeting a wide range of adjustability for various rider weights and abilities while avoiding any compression spiking under high-speed impacts. Starting with computer-generated fluid flow analysis based on real world trail data, we were able to create a very adjustable damper with zero compression spiking and a predictable rebound characteristic.
Key Updates:
- New High-Flow Linear Compression and Rebound circuit. Increased damping response and support without the high speed harshness or packing.
- New low-friction Trelleborg damper seal reduces friction by a whopping 50%. Silky smooth suspension performance during maximum shaft speeds.
- Our industry exclusive Compression Bladder System received a 30% increase in size for increased small bump sensitivity and damping consistency.
- A new detent design improves the “clicker feel” for precise adjustments.
SL “Super-Light” Air System: Our goal was to create an air negative system with an equal level of comfort and traction. Our new SL air spring was extensively modeled in our computer systems to find the perfect balance between the negative and positive chambers. After countless laps on the trail testing various volumes and bleed port locations, we nailed a setting that offered incredible small bump sensitivity, no mid-stroke hammock, and adjustable end-stroke progression.
Crown Design: The Onyx 38 crown plays a massive role in the way the fork feels. The idea was to stabilize the chassis as the fork flexes in big impact situations. The crown is the connecting interface between the steer tube and the stanchions. This “bridge” needs to be a stable connecting point that offers a uniform flex pattern. Thicker arms on the crown, an oversized race platform and strategically variable wall thickness all work together to deliver amazing steering precision while reducing the dreaded “tuning fork” effect.
Key Updates:
- Increased drop for extra down-tube clearance on e-bikes and standard bikes.
- Strategically variable wall-thickness for improved stiffness and strength.
- Oversized crown-race platform puts more material around the steer tube. This helps to stabilize the steer in high load situations and offers a clean look on modern bikes.
- Dual Hollow Bore Design keeps weight down and strength up.
- Forged aluminum with a sand-blasted finish.
Floating Axle System: design cue taken from our Emerald Inverted fork, a floating axle offers perfect alignment of the uppers and lowers. This takes up any imperfections in hub fitment that could cause the legs to pinch together resulting in stiction and harshness.
Specification:
Adjustments: D1 SL: High/Low Speed Compression | Rebound | Positive Volume Reducers
Travel: 170mm
Offset: 44mm
Axle to crown: 29 = 597mm at 180mm
Stanchions: 38mm Tapered Alloy
Wheel Size: 29
Axle: 15mm Floating Axle
Brake Mounting: Direct Mount 203mm
Colour: Apatite Grey
THE ONYX-REDEFINED.
Experience incredible steering precision, small bump sensitivity, and absolute control with the new Onyx 38. A unique E-Designed chassis, wider-than-ever stance, and burly 38mm stanchions launch the Onyx into a new era of MTB Suspension.
All new demands require all new thinking. The Onyx D1 38 sets a new standard in E-Designed suspension. What does it mean to be specifically E-Designed? For years, the market has taken “acoustic” suspension and made after-thought upgrades in order to make it “E-Bike Approved”. Bumping up compression damping, using a slightly thicker crown, or just saying “Add 10 PSI” isn’t doing it right. E-Specific design means we thought about these needs from day one. How can we make a fork flex equally as one unit? How can we achieve unreal steering precision without the harshness or deflection? How can we control the fore and aft flex issues the added weight of an e-bike puts on a fork? Questions like these were the foundation, the bones of this concept. After years of engineering, different thinking, and countless hours testing, we nailed it. The final result wasn’t only a fork that met all the requirements and needs of a modern, aggressive E-bike, but it directly translated to a regular bike.
Features:
One Unit Chassis Design: We knew what we wanted to achieve in overall performance, we just needed to understand how to get there. Keeping in mind that e-bikes are heavier, faster, and can cover more ground than “acoustic” bikes, the starting point was creating a chassis structure (steer tube, crown, stanchions, and lowers) all as one component. Learning from decades of design, fully optimizing individual parts for weight tends to create an unequal flex pattern in the fork. A “beefed up” crown mated with a thin walled pair of stanchions won’t allow the fork to flex properly. Each critical piece of the chassis was designed to work together, as one unit. Based on our engineering and design efforts, we focused on designing a chassis that was compliant enough to mitigate low & high frequency vibrations while dispersing the energy waves throughout the entire chassis structure. This delivers unmatched confidence in terms of traction, braking, steering precision and comfort no matter what kind of bike you are riding.
D1 Damper: After achieving our performance goals with our chassis design, we had a clear view on how our damper needed to perform. Since the chassis delivered incredibly smooth sliding performance, the upgraded D1 damper became an easy project to undertake. Targeting a wide range of adjustability for various rider weights and abilities while avoiding any compression spiking under high-speed impacts. Starting with computer-generated fluid flow analysis based on real world trail data, we were able to create a very adjustable damper with zero compression spiking and a predictable rebound characteristic.
Key Updates:
- New High-Flow Linear Compression and Rebound circuit. Increased damping response and support without the high speed harshness or packing.
- New low-friction Trelleborg damper seal reduces friction by a whopping 50%. Silky smooth suspension performance during maximum shaft speeds.
- Our industry exclusive Compression Bladder System received a 30% increase in size for increased small bump sensitivity and damping consistency.
- A new detent design improves the “clicker feel” for precise adjustments.
SL “Super-Light” Air System: Our goal was to create an air negative system with an equal level of comfort and traction. Our new SL air spring was extensively modeled in our computer systems to find the perfect balance between the negative and positive chambers. After countless laps on the trail testing various volumes and bleed port locations, we nailed a setting that offered incredible small bump sensitivity, no mid-stroke hammock, and adjustable end-stroke progression.
Crown Design: The Onyx 38 crown plays a massive role in the way the fork feels. The idea was to stabilize the chassis as the fork flexes in big impact situations. The crown is the connecting interface between the steer tube and the stanchions. This “bridge” needs to be a stable connecting point that offers a uniform flex pattern. Thicker arms on the crown, an oversized race platform and strategically variable wall thickness all work together to deliver amazing steering precision while reducing the dreaded “tuning fork” effect.
Key Updates:
- Increased drop for extra down-tube clearance on e-bikes and standard bikes.
- Strategically variable wall-thickness for improved stiffness and strength.
- Oversized crown-race platform puts more material around the steer tube. This helps to stabilize the steer in high load situations and offers a clean look on modern bikes.
- Dual Hollow Bore Design keeps weight down and strength up.
- Forged aluminum with a sand-blasted finish.
Floating Axle System: design cue taken from our Emerald Inverted fork, a floating axle offers perfect alignment of the uppers and lowers. This takes up any imperfections in hub fitment that could cause the legs to pinch together resulting in stiction and harshness.
Specification:
Adjustments: D1 SL: High/Low Speed Compression | Rebound | Positive Volume Reducers
Travel: 170mm
Offset: 44mm
Axle to crown: 29 = 597mm at 180mm
Stanchions: 38mm Tapered Alloy
Wheel Size: 29
Axle: 15mm Floating Axle
Brake Mounting: Direct Mount 203mm
Colour: Apatite Grey