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Ultro S Mid-Drive Motor (100Nm Torque)
Refined Power for Urban Adventure
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Level 4 ADV Ebike
This product has been discontinued — here are some great alternatives
This product is currently unavailable — here are some great alternatives
Compatible Accessories
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800Wh Keyless Removable Battery
Easy Battery Access
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Up to 110 Miles Range
Take Your Adventure Even Further
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Suspension Fork & Seatpost
100mm of Suspension and Suspension Seatpost
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E-Shifter & Customizable AutoShift
Not Autopilot, But the Next Best Thing
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Adjustable Stem & Rider-Friendly Geometry
Customizable Comfort
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4G / GPS Real-Time Tracking
Keep An Eye On Your Ride
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Integrated Rear Wheel Lock
Built-in security, lock your hub instantly to prevent bike thefts.
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Unusual Activity Detection & Alerts
Stay Up-To-Date
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Apple Watch Connection
Stay Connected On Your Apple Watch!
Which one suits you best?
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Features
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Level 4 ADV Ebike
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Level 4 REC Ebike
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| Ebike Model |
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| Price | $2,799.00 | $1,999.00 |
| Colors |
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Weight
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61lbs
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68.5lbs
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Motor
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Aventon Ultro S Mid-drive Motor, 100Nm Motor Torque, 750W Peak Power
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Hub Motor, 80Nm (96Nm in Boost Mode), 1188W Peak (1440W in Boost Mode)
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Frame
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6061 Aluminum
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6061 Aluminum
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Fork
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100 mm Travel, Adjustable Coil Spring with Preload Adjustment and Lockout, 15x100 mm Thru Axle, 43 mm Offset, Tapered Steerer Tube
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80 mm Travel, Adjustable Coil Spring with Preload Adjustment and Lockout, Nutted Axle
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Smart Features
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Uphill Start Assist, E-Shift, Autoshift, Ride Tune, 4G/GPS, Unusual activity detection, E-lock, Hold Mode, Remote Notification
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Regenerative Braking, Ride Tune, 4G/GPS, Unusual activity detection, E-lock, Hold Mode, Remote Notification
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Range
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Up to 110 Miles
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Up to 75 Miles
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Battery
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Removable Lithium-Ion. 36V, 20Ah, 800Wh, Samsung 21700 58E cells
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Removable Internal Lithium-ion. 36V, 20Ah, 733Wh, LG 21700 cells
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Front Brake
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Tektro HD-M3120 2-Piston Hydraulic Disc Brakes
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Tektro HD-E3520 2-Piston Hydraulic Disc w/ E-Cutoff
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Rear Brake
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Tektro HD-M3120 2-Piston Hydraulic Disc Brakes
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Tektro HD-E3520 2-Piston Hydraulic Disc w/ E-Cutoff
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Throttle
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Compatible, Not Included
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Included
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Rear Derailleur
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Shimano Cues 10-Speed
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Shimano Altus RD-M310
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Shifter
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E-Shifter
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Shimano 8-Speed Trigger
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Cassette
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Shimano Cues 10-Speed 11-39T
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Shimano CS-HG200-8 8 speed Cassette, 12-32T
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Crankset
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165mm ISIS Splined
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165mm
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2 Year Warranty
from the date of purchase
Lifetime Frame Warranty
*with ebike registration
1,800+ Bike Shops
for maintenance, service, and repairs
General Info
Weight
61lbs
Total Weight Limit
300 lbs
Rider Height
Medium - 5'3"-5'10". || Large - 5'10"-6'4". || Extra Large - 6'4"-6'7"
Ebike Class
Class 1 (Convertible to Class 2 and/or Class 3)
Water Resistance
Bike - IPX6 // Motor - IP67
Range
Up to 110 Miles
Safety Certifications
Battery Safety Certifications
Frameset
Frame
6061 Aluminum
Fork
100 mm Travel, Adjustable Coil Spring with Preload Adjustment and Lockout, 15x100 mm Thru Axle, 43 mm Offset, Tapered Steerer Tube
Rear Spacing
135mm
Fork Spacing
100mm
Wheelset
Front Wheel
27.5" Double Wall Aluminum, 36H
Rear Wheel
27.5" Double Wall Aluminum, 36H
Tires
Kenda K1052, 27.5x2.2"
Ebike System
Motor
Aventon Ultro S Mid-drive Motor, 100Nm Motor Torque, 750W Peak Power
Motor Torque
100Nm
Motor Power
750W Peak
Display
A280 Center Display
Battery
Removable Lithium-Ion. 36V, 20Ah, 800Wh, Samsung 21700 58E cells
Battery Weight
8.7lbs
Throttle
Compatible, Not Included
Charger
42V 4A charger
Charging time from 0% to 100%
5 hours
Lights
Front and rear lights integrated
Smart Features
Uphill Start Assist, E-Shift, Autoshift, Ride Tune, 4G/GPS, Unusual activity detection, E-lock, Hold Mode, Remote Notification
Brakes
Front Brake
Tektro HD-M3120 2-Piston Hydraulic Disc Brakes
Rear Brake
Tektro HD-M3120 2-Piston Hydraulic Disc Brakes
Front Brake Rotor
180mm 6 bolt
Rear Brake Rotor
180mm 6 bolt
Brakes
Hydraulic
Drivetrain
Rear Derailleur
Shimano Cues 10-Speed
Chainring
48T
Crankset
165mm ISIS Splined
Pedals
9/16" Composite Platform
Shifter
E-Shifter
Chain
9/10/11 speed 126L
Cassette
Shimano Cues 10-Speed 11-39T
Cockpit
Saddle
Aventon Saddle
Seatpost
Aventon Suspension Post, 30.9mm, 50mm Travel, 400mm Length
Seatpost Clamp
34.9mm
Handlebars
31.8mm, 680mm Width, 30mm Rise
Grips
Aventon Lock on grips
Included Accessories
Rear Rack
Included
Fenders
Included
Integrated Lights
Included
Let’s get you fit
Enter your height to see your recommended bike size
Based on your height, we see that you would be a good fit for sizes.
Based on your height, we recommend you get a “ ” for the best ride fit.
This bike may not be a great fit based on your height. Please reach out to our support team for specialized assistance.
Size height/inseam range
Rider Height
Inseam Range
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Height:
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Inseam:
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This bike is available in multiple sizes to suit most adults.
| Frame Size | Medium | Large | Extra Large |
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| A - Seat Tube Length | 425mm | 450mm | 520mm |
| B - Top Tube Length Horizontal | 614mm | 632mm | 649mm |
| C - Bottom Bracket Drop | 65mm | 65mm | 65mm |
| D - Head Tube Length | 120mm | 130mm | 140mm |
| E - Head Tube Angle | 69° | 69° | 69° |
| F - Seat Tube Angle | 74° | 74° | 74° |
| G - Rear Chainstay Length | 480mm | 480mm | 480mm |
| H - Front Wheel Center | 704mm | 722mm | 741mm |
| I - Wheelbase | 1176mm | 1195mm | 1214mm |
| J - Reach | 430mm | 445mm | 460mm |
| K - Stack Height | 642mm | 652mm | 661mm |
| L - Fork Length | 515mm | 515mm | 515mm |
| M - Fork Offset | 46mm | 46mm | 46mm |
| N - Trail | 84.3mm | 84.3mm | 84.3mm |
| Wheel Size in Inches | 27.5" | 27.5" | 27.5" |
| Stand Over Height | 699mm | 743mm | 766mm |
| Rider Height (Range) | 162cm - 179cm (5'3" - 5'10") | 180cm - 189cm (5'10" - 6'4") | 190cm - 195cm (6'4" - 6'7") |
The mid-drive gives a more natural, more refined pedaling experience. The Ultro mid-drive series also facilitates some of our newest tech, such as E-Shift and AutoShift, which when combined with Auto Mode, creates a seamless ride experience.
The Ultro S is our 100Nm mid-drive motor, with enough power to propel you through city streets and urban climbs. The Ultro X is tailored for eMTB specifically, and has features that would be unnecessary on a platform like the Level.
The best way to dial in AutoShift is to continue to explore the settings in the app and on the display. Although default cadence is 60, some more experienced riders may find that they prefer a higher cadence.
Level 4 ADV comes in four sizes (S-XL). Please refer to our sizing chart to find which bike fits you best.
Yes, you can purchase a throttle from Aventon and install it on the Level 4 ADV, converting it to a Class 2 ebike. Please note that the throttle response on a mid-drive bike is a much different experience and will feel much more sluggish than a regular hub-drive throttle.
Level 4 ADV comes out of the box as a Class 1 eBike, meaning no throttle and a max pedal assist speed of 20mph. However, the Level 4 ADV is throttle-compatible and able to be unlocked to a pedal assist speed of 28mph.
Aventon does not sell conversion kits. All Aventon bikes are already designed with electrical components, such as integrated batteries, motors, and sensors for an optimal riding experience.
Taking care of your ebike battery is an integral part of getting the most out of your Aventon ebike. Here are a few things to remember:
- 1. Charge your battery regularly to avoid fully draining your battery’s stored energy or voltage.
- 2. Use the right charger. Only use an Aventon branded and proper model charger (Be sure to place the charger brick on a flat, non-flammable surface like metal or concrete. The charger brick will conduct heat while charging.)
- 3. Avoid overcharging your ebike.
- 4. Avoid extreme temperatures. Store and charge the battery in a climate-controlled area, keeping it away from both extreme heat and cold.
- 5. Maintain the right level of charge. The battery should be stored at 75% charge to its health.
- 6. Avoid heavy loads. Do not exceed the bike’s recommended maximum capacity.
- 7. Keep your battery, terminal, & ports clean.
Some Aventon models, such as the Level 2, Level 3, Abounds, Sinch 2, & Aventure 2, come with pre-installed fenders and a rear rack. Additional accessories are available for purchase. Explore a wide-range of Aventon accessories, including helmets, locks, bike pumps, and so much more to add to your next riding adventure.
All Aventon-branded frames, framesets, components, and batteries come with a 2-year warranty. Learn more about the Aventon warranty.
Electric bikes require regular maintenance tune-ups similar to traditional bikes and cars. To get the best performance out of your ebike, regularly check tires, tubes, chains, battery, and brakes, or visit a local bike shop for professional assistance. Performing a pre-ride safety check helps maintain your ebike, as well as staying up-to-date on non-electric component maintenance and repairs.
The torque sensor design is more intuitive for the rider at high and low speeds, it’s more efficient, has smoother power delivery, and is less prone to damage as the sensor is internal opposed to the external cadence sensor.
*Aventon has the right without notice to the consumer to substitute components of at least equal quality for advertised Aventon ebike components in the event of the unavailability of such advertised components. More info.
For additional lithium-ion battery safety tips and information, including with respect to the use, charging, and storage of lithium-ion batteries, please click here to review safety information published by New York City.
†Certain features of this electric bike require a 4G data connection. A complimentary 4G connection subscription is included for the first year, beginning from the product service registration date. The 4G connection subscription service enables seamless access to advanced connectivity features including, but not limited to: GPS Location, 4G cellular communication activation, 4G cellular communication, Lost bike reporting, Remote Shutdown, Periodic status reports, Riding statistics summary information, Alarm and operation prompt sound, Vibration monitoring when powered off, Periodic status reporting when powered off, Transportation Mode, Key information synchronization, and Geofencing. After the first year, a paid 4G connection subscription will be required to maintain access to these services. Please note that data subscription fees and terms may apply.
What People Are Saying
Customer Reviews
Based on 1760 reviews
83%
(1456)
11%
(189)
3%
(55)
1%
(23)
2%
(37)
M
Just took my first ride on my Level 4 ADV. I upgraded from a Level 2 that I bought two years ago. The least I can say is WOW! The wireless shifting alone makes buying it a no-brainer, but the Level 4 goes way beyond that.
I don't know where to begin, but the automatic shifting is a game changer. I haven't fine-tuned it but even out of the box it's phenomenal. I rode the first half of my 26 mile nightly ride with eco boost and increased my average time by about 20% over the Level 2. On the way back I rode without pedal assist. Despite the extra weight and drag, I actually rode the 13 miles home FASTER than my hybrid MTB!
The configuration options are limitless. I thought I would have to go in and program each level of pedal assist for each of the four modes (off, eco, sport, turbo), but Aventon has made all that unnecessary. You can adjust the pedal assist by specifying the cadence you want to maintain, the effort you want to exert, the amount of assist the bike provides vs. your effort, etc. Setting a lower cadence requires more effort for a given speed, and it gives you a better workout. I found that 75 RPM was about right for the effort I wanted without using pedal assist. The bike senses cadence changes and selects the gear accordingly. It shifts down going uphill, up going downhill, etc. It even downshifts when you stop to make it easier to get up to speed! You can also ride it in fully manual mode, just as you would a traditional bike.
Automatic shifting is just one improvement. Here's some more.
1) The cheap plastic chain guard that broke off from my Level 2 is now metal.
2) Fender extensions that provide extra protection from splashes and dirt are included. I rigged up an old plastic fender on the Level 2.
3) The Level 4 weighs 10 lbs. less and the weight is better balanced. It's much easier to carry up the stairs into my house.
4) The Level 4 seat post has been upgraded to a suspension style.
5) The mid drive motor feels more natural than the hub motor, and it's much easier to remove the rear wheel.
6) The security features are fantastic. I put a rear light with a motion sensing alarm on the Level 2. The Level 4 has wheel and battery lockouts, an option to use a PIN to start it, and several other improvements including geofencing!
7) The rear lights have been moved from the fender and seat stays to where the seat and chains stays meet, making it more visible to drivers, especially when using panniers.
8) Orange turn signals are integrated into the lights. On the minus side, the Level 4 does not have brake lights.
9) The Level 4 has a 10 speed cassette vs. 8 on the Level 2.
10) Last but very far from least, the range on the Level 4 is 120 miles, double that of the Level 2. The ability to easily pedal without assist makes it very easy to extend that range when riding on flat terrain, using assist only when necessary.
Here's a few negatives.
1) Aventon uses low-range components without an option to upgrade. That's understandable, as very few riders need a better group set. Despite this, the chain and cassette on my Level 2 have lasted an incredible 6,300 miles! I've had no problems with the shifters, brakes, chain rings, derailleur, cables, etc.
2) The stock Kenda tires are prone to flats and are a compromise between city and trail riding. I ride almost exclusively on pavement and upgraded them to Schwalbe Marathon E-Plus. I rode 6,000 miles before I got my first flat!
3) The Level 4 pedals are plastic. I installed dual-sided metal ones with platform and clipless sides.
4) The kickstand, which broke off on my Level 2, doesn't seem to be any better. Worse yet, you can't install a motorcycle-style two leg kickstand because there's no space between the chain stays in front of the rear wheel. Single-sided kickstands will not hold the bike up when it's carrying a heavy load such as panniers filled with groceries.
5) This is a big one. Aventon chargers don't show the level of charge. All lithium-ion batteries perform best and will last longer when they're not charged over 80% or drained below 20%. They also have to be fully charged every 10 complete cycles to prevent them from developing a "memory." I have to manually calculate the charging time by multiplying the percentage of charge I want to add by 2.5 minutes and use a countdown timer. Also, the batteries "overcharge" by about 15%. I can ride 10 - 12 miles before the charge level drops to 99% on the display. I have to factor this in when setting a charging time.
If you're unsure if you should buy a Level 4 ADV, you can put any doubts to rest. This bike has EVERYTHING that I've wanted in an e-bike and more at a very competitive price point. The positives far outweigh the negatives.
JUST BUY IT!
Hi there,
Thank you so much for taking the time to leave such a detailed and enthusiastic review of our product, the Level 4 ADV Ebike! We are thrilled to hear that you are enjoying your upgrade from the Level 2 and are already seeing impressive results on your rides.
We are thrilled you are really enjoying the new features and it is making riding so much better for you. We also appreciate you feedback about what you felt could be better for you and will use this in consideration moving forward.
Thank you again for choosing Aventon and we hope you continue to enjoy your Level 4 ADV Ebike. Happy riding!
Best,
Aventon
J
I'm a long time bike rider and was silently shopping for an ebike. I gave myself 5 years to decide when I came upon a few YouTube reviews on the Level 3. It seemed just the bike for me and my purposes. This ebike has allowed me to have an efficient way to get to work while still allowing for a workout if I want. I love how I can get to work with minimal sweating compared to the old pedal bike which I still ride on weekends. Eco mode is all I've really used and only use the throttle at intersections but I'm sure I'll try out all the features. I hope there isn't a direct update to this bike soon because I'm still getting to know my new friend. Thanks Aventon!
Hello Jarvis!
We are so glad to hear that our Level 3 Ebike exceeded your expectations and fits perfectly with your needs. It's great to know that it has made your daily commute easier and more enjoyable. We hope you continue to discover and enjoy all the features of your new friend.
Thank you for choosing Aventon and happy riding!
B
I purchased the level 3 direct and the assembly was easy and well explained instructions. I’m in my mid 60s and had a knee replacement and struggled with my regular bike. After doing a lot of research I found Aventon to be the best choice. I couldn’t be happier with the level 3. I depend on biking for all my local errands as traffic is a real pain and biking is way easier than driving. I would recommend an Aventon model and they offer many different options for individuals.
Hi there, thank you so much for your kind words and for choosing our Level 3 Ebike. We're so glad to hear that it has been a great fit for your needs. We always strive to provide easy assembly and clear instructions for our customers. It's great to know that the Level 3 made your daily errands much easier and more efficient. We truly appreciate your recommendation and we hope you continue to enjoy your Aventon.
Happy riding!
Z
Been riding an Aventure 3 for about 6 months and had been eye-balling the Level 3 as a good partner. I can say that this bike has surpassed expectation. The build quality from Aventon is phenomenal... right out of the box it goes together easily and rides like a dream. The fact that many of my accessories and parts are interchangeable with my Aventure 3 allows me to pick which bike to ride that day with ease. The Level 3 is an ultimate commuter bike that makes one WANT to ride. E-bikes are heavier in general to conventional bikes but the Level 3 lets you forget that. The app lets me manage both bikes easily and lets me know my riding stats. The security features an added bonus. The few times I have had to reach out, Product Support has been a notch or 12 above other companies and has always been able to help. Thank you!!
Thank you for taking the time to write such a wonderful review! We're thrilled to hear that our Level 3 E-Bike has exceeded your expectations and has become your go-to commuter bike. We take pride in the build quality of our bikes and are happy that you've had a great experience with our customer service team.
Keep riding and enjoying the convenience and performance of our Level 3 E-Bike.
Happy riding!
M
I will review our new Level 3 bikes after a few months of riding. However, I have to leave a review of our local dealer, Brooks Bike Shop in Mandeville, LA. All of your dealers should be held to the standards of the owner of this store. Outstanding service, great customer focus and great support staff!
Hi Michael!
Thank you for taking the time to leave a review for our Level 3 Step-Through Ebike. We are thrilled to hear that you had a positive experience with our Aventon dealer, Brooks Bike Shop in Mandeville, LA. It's great to know that they exceeded your expectations. We look forward to hearing your thoughts on the bike after a few months of riding.
Ride on!
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