 
      
    Top Black Friday & Cyber Monday Bike Deals Australia 2025
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Time to read 14 min
Table of Content
Dual‑Suspension MTB deals
The Top Choice: Polygon Siskiu T8 UDH
The Polygon Siskiu T8 is a high-performance, do-it-all trail bike. Its UDH-ready ALX frame with 140 mm front and 135 mm rear travel, reinforced rear stays, and fully internal cable routing delivers a clean, durable build. Fox 34 Float Rhythm fork, Float DPS rear shock, and Shimano SLX 1×12 drivetrain on Microspline hubs provide smooth suspension and crisp shifting. Modern geometry—with a slacker head angle, steeper seat tube, and longer reach—boosts confidence on descents while keeping climbs efficient. Maxxis tyres and a dropper post offer traction and control across flowy singletrack and technical terrain. Lightweight, nimble, and packed with premium features, the Siskiu T8 makes high-performance trail riding accessible to riders of all levels.
The Gravity Sender: Marin Trail XR
Marin’s 2025 Alpine Trail XR is the star of our BFCM mountain‑bike deals. Its Series 4 MultiTrac 2 LT frame uses a mixed‑wheel setup (29‑inch front, 27.5‑inch rear) with 170/160 mm travel, and flip‑chips let you adjust head‑tube angle, bottom‑bracket height or even run a 29‑inch rear wheel. Integrated Bear Box storage hides tools and snacks inside the downtube. Premium RockShox Ultimate suspension, a SRAM GX Eagle Lunar drivetrain and DB8 brakes complete this enduro rig at an accessible price.
Electric MTB Deals
The Electric Shred Sled: Polygon Siskiu TE-N
Electric mountain bikes are perfect for riders who want to climb more trails, session descents, or keep up with fast friends. The Siskiu TE‑N is our pick. It pairs 150 mm front travel with 140 mm rear travel and uses a Bosch Performance Line CX motor that delivers 85 Nm of torque. The geometry is deliberately nimble - a steeper head angle and shorter wheelbase - giving the bike a responsive feel on tight singletrack. Riders love how seamlessly the pedal assist delivers power, making technical climbs fun.
The Voltage Voyager: Polygon T7E
The Polygon Siskiu T7E is our BFCM standout e‑trail machine. Built on an ALX trail frame with a 150 mm fork and 144 mm of rear travel and rolling on 29‑inch wheels, this enduro‑ready e‑bike packs Shimano’s EP801 motor and a 630 Wh removable battery. A steep seat tube and active suspension keep it planted on climbs and descents, while a 65° head angle and rear‑end flip‑chip let you switch between mullet and full‑29er setups for agility or stability. Four‑piston Shimano SLX brakes and a 12‑speed drivetrain round out this powerful, controllable ride.
Gravel Bike Deals
The Adventurer's Accomplice: Polygon Bend R6X
Gravel bikes are made for riders who crave adventure beyond the pavement — from winding forest roads to rugged backcountry trails. The Polygon Bend R6X is our pick for riders chasing freedom on two wheels. It’s built around a lightweight alloy frame with a carbon fork, offering the perfect blend of stability and agility. With clearance for up to 700×50 mm tires and mounts for racks, bags, and bottles, it’s ready for everything from weekend gravel grinds to full-blown bikepacking expeditions.
The Bikepacker's Dream: Marin Nicasio Plus 650b
The Marin Nicasio Plus is built for riders who value versatility and timeless design. Its double-butted chromoly steel frame delivers a smooth, compliant ride that soaks up chatter, while high-volume 650b tires open the door to everything from rough gravel to urban shortcuts. The bike’s endurance geometry keeps you comfortable and in control on long days in the saddle, whether you’re exploring backroads, commuting to work, or loading up for a weekend adventure. Outfitted with WTB Horizon 650x47 mm tires, it rolls confidently over mixed terrain with superb grip and comfort. Backed by Marin’s three decades of craftsmanship and innovation, the Nicasio Plus blends classic feel with modern capability—proof that steel is still very real.
Road Bike Deals
All‑round Speed & Comfort: Polygon Strattos S7X
The Polygon Strattos S7X blends endurance comfort with race-inspired performance. Its lightweight ACX carbon frame and full carbon fork keep weight low at 9.11 kg, while Shimano 105 Di2 electronic shifting and hydraulic disc brakes deliver precise, reliable control. The bike’s endurance geometry, flex stays, and carbon seatpost absorb road vibrations for long rides, while a stiff downtube, thru-axles, and wide bottom bracket ensure efficient power transfer. Tubeless-ready wheels, internal cable routing, and subtle aerodynamic touches complete a bike that’s fast, smooth, and capable for everything from gran fondos to weekend training rides.
The Aero Weapon: Polygon Helios A8
The Polygon Helios A8 brings pro-level speed and efficiency to a wider audience. Its ACX carbon frameset, developed with elite athletes, pairs with Shimano Ultegra Di2 and carbon wheels for lightweight, race-ready performance. The re-engineered 880 g frame (size M) is lighter and stiffer than the previous generation, while aerodynamic tubing, a refined fork, and a flared handlebar provide precision handling and comfort. With clearance for up to 34 mm tyres and a cockpit designed for stability, the Helios A8 climbs fast, corners sharp, and descends with confidence—delivering the same pro-level performance that the Terengganu Polygon Cycling Team races on at UCI events worldwide.
Commuter Bike Deals
The Urban Scout: Polygon Path 3
The Polygon Path 3 is a versatile urban bike designed for comfort, efficiency, and everyday reliability. Its durable ALX alloy frame with internal cable routing, rack and fender mounts, and upright yet slightly athletic geometry makes city riding and weekend excursions effortless. Equipped with a Shimano CUES 1×9 drivetrain and MT200 hydraulic disc brakes, it delivers smooth shifting and confident stopping power in all conditions. Thoughtful details—like refined wheels and comfort-focused touchpoints—ensure every ride is controlled, practical, and enjoyable. Lightweight, durable, and ready for life in the city, the Path 3 is your go-to commuter and weekend companion.
The Daily Rider: Marin Kentfield 1
The Marin Kentfield 1 is a versatile commuter and adventure-ready bike designed for comfort, stability, and everyday reliability. Its lightweight Series 1 aluminium frame paired with a steel fork delivers a smooth ride, while Shimano Altus 1× drivetrain and Clarks disc brakes provide precise shifting and stopping power. VeeTire Co. GPVee 40 mm puncture-resistant tyres and thoughtfully designed contact points ensure comfort and control on city streets or weekend explorations. With internal cable routing, rack and fender mounts, a tapered headtube, and a long wheelbase with long chainstays, the Kentfield 1 blends stability, practicality, and style for all your daily rides and longer journeys.
Kids’ MTB deals
The Little Sender: Polygon Siskiu D24
The Polygon Siskiu D24 is a full-suspension trail bike built for young riders ready to push their skills. Its lightweight alloy frame features 120 mm of adjustable air suspension, now paired with hydraulic disc brakes for confident stopping power. The microSHIFT 1×8 drivetrain provides smooth, simple shifting, while the frame grows with your child—converting from 24" wheels to a mullet setup, and finally to a full 26" bike with room for wider tyres. Designed for fun, progression, and durability, the D24 delivers a high-performance mountain biking experience that lasts for years.
The Perfect Starter: Polygon Premier XC 24
The Polygon Premier XC 24 Disc is the perfect first mountain bike for kids aged 7–11. Its lightweight aluminium frame, 50 mm kid-tuned suspension fork, and grippy tyres make handling easy and fun on any terrain. Intuitive shifting, reach-adjustable brakes, and a stem and seatpost that grow with your child ensure control, comfort, and years of use. Designed for young riders ready to explore off-road, the Premier XC 24 Disc delivers a safe, smooth, and confidence-inspiring ride every time.
Summary: For Black Friday and Cyber Monday 2025 in Australia, we break down the best bike deals by category: mountain, electric, gravel, road, and kids’ bikes, plus versatile commuter options. In the mountain bike section, the Polygon Siskiu T8 shines with 140/135 mm progressive suspension, a Fox 34 Float Rhythm fork, Float DPS rear shock, and Shimano SLX 1×12 drivetrain, while the Superior XF 9.7 DC offers a lightweight carbon frame and 110 mm suspension travel for precise, down-country performance. For electric mountain bikes, the Siskiu TE‑N delivers nimble geometry and Bosch Performance Line CX assistance, and the Superior eXF 9019 B pairs a 625 Wh battery with RockShox suspension to tackle technical terrain with confidence.
Gravel riders can explore the Polygon Bend R6X, with a lightweight alloy frame, carbon fork, 700×50 mm tire clearance, and mounting options for racks and bags, or the Marin Nicasio Plus, which blends supple chromoly steel with high-volume 650b tires for comfort and control on mixed terrain. On the road, the Polygon Strattos S7X combines a 9.11 kg carbon frame, Shimano 105 Di2 electronic shifting, and endurance geometry for smooth, powerful rides, while the Polygon Helios A8 delivers pro-level speed with an ACX carbon frame, Ultegra Di2, and aerodynamic tubing, climbing fast and cornering sharp.
For commuters and city riders, the Polygon Path 3 blends upright, slightly athletic geometry with a durable ALX alloy frame, Shimano CUES 1×9 drivetrain, hydraulic disc brakes, and practical rack and fender mounts for smooth, reliable rides on city streets or weekend adventures. The Marin Kentfield 1 is a versatile commuter and light adventure bike with a lightweight Series 1 aluminium frame, steel fork, Shimano Altus 1× drivetrain, Clarks disc brakes, puncture-resistant 40 mm tyres, and mounts for racks, fenders, and bottles—perfect for daily commutes or weekend explorations.
For young riders, the Polygon Siskiu D24 full-suspension bike grows with your child and features 120 mm adjustable air suspension and hydraulic brakes for confidence on trails, while the Polygon Premier XC 24 Disc offers a lightweight aluminium frame, 50 mm suspension fork, and kid-friendly components for a safe, fun first mountain bike.
Check product pages for current pricing, color options, and sizing to maximize these Black Friday and Cyber Monday bike deals. Whether you’re upgrading your trail setup, starting gravel adventures, hitting the road, or commuting with ease, these deals make 2025 the perfect time to ride!
What Methods of Payment Does BikesOnline accept?
How Much Does Shipping Cost?
Parts & Accessories Small Parcels Bikes & Bulky Items Standard Shipping Free Over $149 orders $12.
What Is BikesOnline's Return Policy?
30-Day Parts & Accessories Easy Returns
At BikesOnline, we understand that sometimes your needs or preferences might change. That's why we've crafted a 30 day easy return and exchange policy specifically for our parts and accessories (P&A). Our goal is to ensure your complete satisfaction with your purchase, and we want to make the process as straightforward as possible. See Terms & Conditions >>

Free Bike Return Terms & Conditions
- The Free 30-day Bike Return is applicable to all bikes at BikesOnline and begins from the date of delivery. Just let us know within 30 calendar days from delivery if you'd like to return the bike.
- Feel free to unpack and assemble the bike for sizing and inspection purposes. However, we kindly request that you refrain from test rides to avoid any wear and tear. Failure to comply with these terms or returning bikes in anything less than "as new" condition may result in a minimum restocking fee of $50 or even void the right to a refund. (see examples below).
- If your bike arrived damaged, please report it as soon as possible. Snap some photos of the damage and email them to us via our contact form.
- Make sure to securely pack the bike in its original packaging when returning it. This includes the frame, wheels, and components. Hang on to the packaging just in case. How to pack a bicycle and box it for transport and travel
- You'll need to be present on the scheduled pickup day to hand the bike to the courier.
- If we attempt a pickup and it's unsuccessful due to the item not being ready, we incur a re-booking fee. We can arrange another pickup on your behalf, but any additional fees will need to be passed on to you, which may be deducted from your total refund.
- Damage resulting from improper use, policy abuse, or incorrect assembly, such as damaged pedal threads, tire dirt, frame scratches, or any other damages, will be charged at full retail rates. (see examples below).
- If the bike sustains damage during the return transit due to inadequate packaging by the customer, we reserve the right to charge you the cost of replacing the damaged part or component. Be sure to check out our repacking guide.
- Refunds will be processed after one of our mechanics thoroughly inspects the returned bike. Please understand that this process may take up to 5 business days after the bike is received.
- Refunds will be issued promptly once the bike receives approval from our mechanics. In the rare case of an issue during inspection, we'll contact you regarding policy violations and fees. Please note that some banks may take up to 10 business days to finalize the transaction after we issue the refund. The refund for the bike does not include any shipping costs associated with your original transaction. However, the return shipping within our 30-day policy is on the house.
What will result in a restocking fee:
- Scuffs, scratches and signs of excessive use on components and frames
- Signs of excessive drivetrain wear
- Bikes ridden in adverse weather and not returned in like-new conditions
- Bikes showing damage to the frame or other components
- Bikes incorrectly or insufficiently packaged
- Damage incurred in the return shipping due to improper packaging
 
Bike Return FAQ
What If You Want to Keep Your Bike?
No need to worry! Just keep riding! Beyond the free 30-day return period, your bike is still covered by the BikesOnline consumer guarantee.
What If You Received a Damaged Bike in Transit?
If you've received a bike that's been damaged in transit, please snap some photos of the damage and send them to us via our contact form.
What If You Received a Bike with an Issue?
We're sorry to hear you're having trouble, especially with your brand new bike. We're here to assist, and the sooner we know about it, the better. Please reach out to us via our contact form.
To help us help you, provide us with:
- A quick explanation of the issue with your product.
- Your order or invoice number.
- Photos or videos of the issue.
With these details, we'll swing into action to get you back on your bike, whether you're hitting the road or the trails, as quickly as possible. Your satisfaction is our top priority!
Do I Get a Refund for the Initial Shipping Cost?
While we're happy to cover the return shipping and pickup costs, please note that the initial shipping cost will not be refunded.
How Is the Bike Picked Up from My Address?
We'll coordinate the pickup of your packaged bike for free. We'll work with you to schedule a convenient pickup date at your designated address. To ensure a smooth process, be present on the scheduled date to hand the bike over to our courier. We recommend giving our carrier, a call on the morning of the pickup to get an estimated time of arrival.
What About My Accessories?
Our standard returns policy applies to unused accessories. You can check out our Refund & Exchange Policy.
When Will I Get My Refund?
Refunds will be processed after one of our mechanics thoroughly inspects the returned bike
30-Day Parts & Accessories Easy Returns Terms & Conditions
Conditions of return
- Goods can be returned within 30 days of delivery and must be in the original packaging as new - no signs of installation, damage or wear, tags (if present) still attached.
- 
Must be in original packaging which is not damaged as new condition, not ripped, torn, stickers or tape.   
- If an item has been deemed or used upon its return, we will contact you directly. We will be asking for the shipping fee to be covered to get the used item back to you.
- We have a dedicated "no return" Bib short, Chamios and Swimwear/Wetsuits policy due to hygiene reasons, ensuring customers receive new, clean, and hygienic products with every purchase.
- Please inform us via email here, before you send an item back to us to speed up the refund/exchange process.
- BikesOnline reserves the right to refuse any returned item without notice if we deem the return to not meet guidelines set upon creation of an RMA.
- Please allow up to 14 business days for return to be processed. All refunds will be provided via the original method of payment.
How will I be refunded?
- Refunds will only be issued via the original payment method made. Please refer to these links for how refunds are issued through PayPal, PayPal- Pay in 4 and Zip pay
- In the event that the original payment credit card has expired since time of purchase but the account remains active, funds will be transferred onto the updated credit card as your bank will process the transfer by identifying and matching your account number.
- In the event that your credit card and account are closed please assist us in arranging an alternate method.
How to return Parts & Accessories?
- 
  Visit ParcelPoint to start your return and follow the prompts- Please be aware that using ParcelPoint may result in return delays due to less frequent pickup schedules by their service partners. We recommend choosing this option if your return is not time sensitive or if an Aupstralia Post office is not conveniently accessible in your area.
 
- Fill in all the fields. You will need your original Order ID to book in your return. It starts with “N” followed by 5 digits, e.g. BO12345. You can find this number on your order or shipping confirmation email and also your invoice.
- Download and print your shipping label. Apply to your package once you have securely packed your items. Note: do not tape up or attach labels direct to the retail packaging.
- Drop off your parcel to any store offering ParcelPoint Returns (only if selected ParcelPoint), or to your nearest post office (only if selected Australian Post).
- In the return parcel, include your order number and whether you would like an exchange or refund.
- Return items to: BikesOnline Unit 13/25 Frenchs Forest Road E, Allambie Grove Business Park, Frenchs Forest, NSW, 2086
Tracking
- ParcelPoint: go to http://parcelpoint.com.au/track and use the ‘ParcelPoint ID’ to track your return. You find your ParcelPoint ID on your ParcelPoint returns slip.
- Australia Post: go to http://auspost.com.au/track and use the ‘Article Number’ to track your return. You find the ‘Article Number’ on your receipt.
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      ![Polygon Siskiu T8 - Mountain Bike [New]](http://bikesonline.com.au/cdn/shop/files/Siskiu_T8_UDH_-_chameleon_green_420x420.jpg?v=1754955051)