The Checkpoint ALR 4 is a high-value gravel bike ready for the roads less travelled. Kitted out with a 300 Series Alpha Aluminium frame, the Checkpoint ALR 4 is just as responsive on chunky gravel roads as it is smooth on the tarmac. Tons of features like tubeless-ready wheels, a SRAM Apex 11-speed drivetrain and mechanical disc brakes make Checkpoint ALR 4 the perfect ride for ease of entry into the wide world of gravel.
You're ready for adventures beyond the beaten path and want a gravel bike that balances budget and capability. The Checkpoint ALR 4 is your ticket to turning every ride into an adventure. You're ready for adventures beyond the beaten path and want a gravel bike that balances budget and capability. Checkpoint ALR 4 is your ticket to turning every ride into an adventure.
A responsive 300 Series Alpha Aluminium frame, hidden cables that won't interfere with bags, integrated rack, mudguard and frame bag mounts, a 1x11 speed SRAM Apex drivetrain for smooth shifting on punchy climbs and variable terrain, mechanical disc brakes for ease of stopping quick in all conditions, tubeless-ready rims and wide Bontrager Girona Pro 700x42c gravel tyres for added comfort and traction. A responsive 300 Series Alpha Aluminum frame, hidden cables that won't interfere with bags, integrated rack, fender, and frame bag mounts, a 1x11 speed SRAM Apex drivetrain for smooth shifting on punchy climbs and variable terrain
If you're ready to start exploring every road while taking on the daily grind, the Checkpoint ALR 4 is the ride for you. Versatility is the name of the game and a durable alloy frame, mounts for all kinds of accessories and wide tyres make for comfort and customisation wherever the road, or lack thereof, takes you. If you're ready to start exploring every road while taking on the daily grind, Checkpoint ALR 4 is the rid
- The durable and capable 300 Series Alpha Aluminium frame makes for a fun, stable and responsive ride The durable and capable 300 Series Alpha Aluminum frame makes for a fun, stable, and responsive ride
- You get serious versatility that's suited for a wide variety of ride styles, from gravel and bikepacking to daily commutes You get serious versatility that's suited for a wide variety of ride styles, from gravel and bikepacking to daily commutes
- Massive tyre clearance means you can use tyres up to 45 c for extra traction and stability in any conditions Massive tire clearance means you can use tires up to 45c for extra traction and stability in any conditions
- Fork, top tube and integrated frame mounts make it easy to carry gear and water Fork, top tube, and integrated frame mounts make it easy to carry gear and water
- Powerful mechanical disc brakes make stopping in all conditions easy Powerful mechanical disc brakes make stopping in all conditions easy
New progressive geometry
For quick, nimble handling that still keeps you stable and in control on rougher descents.
Tyre clearance
Lots of clearance means you can run meatier tyres (700x45 mm or 27.5x2.1") for tackling chunkier gravel and terrain.
Tons of mounts
Integrated frame bag and mudguard mounts make it easy to carry gear and water.
Don't forget your pedals
This bike doesn't come with pedals because you'll have a better time on your new bike if you choose your own. See the pedal guide to find the best pedals for your riding style.
0% APR Finance with Just a 10% Deposit
Looking to spread the cost of your new road, mountain, electric or commuter bike?
We’ve partnered with Novuna Personal Finance to offer flexible payment options both online and in-store.
✔ 0% APR available over 6, 12, 18 or 24 months
✔ Interest-bearing finance available over 12, 24, 36 or 48 months
✔ Only 10% deposit required
✔ Minimum spend £675
Finance makes it easier to get the bike you want — without the upfront hit.
Please note: 0% finance may not be available on selected discounted products.
Finance Options at a Glance
Term (Months)
APR
Deposit
6, 12, 18, 24
0%
10%
12, 24, 36, 48
15.9% Representative
10%
Credit subject to status and affordability. Terms & Conditions apply.
Finance is provided by Novuna Personal Finance, a trading style of Mitsubishi HC Capital UK PLC, authorised and regulated by the Financial Conduct Authority (FRN 704348).
The Financial Services Register can be accessed at www.fca.org.uk.
With 0% finance, you pay no interest — just the bike, split into manageable payments.
How to Apply
Online:
Add your items to the basket, select the finance option at checkout, and complete the secure online application.
In-store:
Let one of our team know you’d like to pay by finance and we’ll guide you through the process.
Applications usually take just a few minutes, and you’ll often receive a decision quickly.
Once approved, you can e-sign your agreement or print and return it. Goods are dispatched once your signed agreement has been received and processed.
Finance FAQ
Who can apply?
You must:
Be 18 or over
Be a UK resident (minimum 12 months)
Work at least 16 hours per week, or be retired with an income
Have a UK bank account
Unfortunately, finance is not available to residents of the Republic of Ireland.
When do repayments start?
Your first repayment will be taken approximately one month after your purchase has been delivered.
Are there any hidden fees?
No. There are no arrangement fees or hidden extras.
What happens if my application is declined?
Applications are assessed using credit scoring and checks with credit reference agencies. If declined, you may reapply after 6 months, as circumstances can change.
Need Help?
If you have any questions about finance, call us on 01363 774773 and our team will be happy to help.
Here at the Bike Shed we always strive to offer value for money and offer friendly expert advice on the best quality products we can source.
We are great supporters of shopping locally due to the benefits it has on our local economy, employment, and community. However, we do not want to see you disadvantaged by choosing to shop with us and we, therefore, will match any UK based competitors’ prices on the following conditions:
• The product must be available with the UK supplier even if discontinued or an older model.
• If assembly is required there may be an additional charge for this. Please note: If the Bike Shed assembles your bike not only will your warranty be more robust you also qualify for a free first service with us.
• We reserve the right to contact the seller to verify the price/availability/accuracy etc.
• Used, ex-demo, ex-display, returns, and all online auction sites do not qualify.
Where the item does not match the above, we still attempt to be competitive in terms of price, quality, and service.
We reserve the right to decline the price promise at our own discretion
Buy a bike from the Bike Shed and your first service is on us!
Simply arrange a convenient time with your local store and our bike mechanics will give your bike a thorough check and tune up to ensure you're riding as smoothly and efficiently as possible.
Your free service needs to be taken between approximately 6 weeks and a maximum of 3 months from the date of purchase.
Please note: To qualify for the free service you are responsible for bringing your bike into a store. Unfortunately collections are not possible.
Looking for a more comprehensive service? Check out our workshop page for more details
Frame
Size 58, UNI, Aluminium, 300 Series Alpha Aluminum, tapered head tube, Internal cable routing, 3S chain keeper, T47 BB, rack and fender mounts, integrated frame bag mounts, flat mount disc, 142x12mm thru axle
Wheel Size
Front 28
Wheel Size
Rear 28
Weight
9910 g
Fork
Checkpoint, full carbon, tapered carbon steerer, rack mounts, fender mounts, flat mount disc, 12x100mm thru axle
Our size guides are a helpful starting point, but they’re only a guide. For complete confidence, check the brand’s sizing advice or pop into one of our stores — because nothing beats sitting on your new bike to make sure it feels spot on.
Trek Road Bikes
Madone, Emonda, Domane, Silque, Lexa, Boone, 1 Series
The easiest way to determine your frame size is by height, but many riders find that they are between sizes. Choosing to go up or down a size depends on your personal riding style and body proportions.
A bike with a longer reach will have a longer wheelbase. That makes it more stable, especially on high-speed descents. That’s great for riders who like to plough through rather than pop over rough stuff on the trail. If you have a relatively long torso or arms for your height, you may find that a longer reach gives you a roomier, more comfortable cockpit.
A bike with a shorter reach will have a shorter wheelbase. It’s not as stable, but it’s more nimble and easier to flick around. That’s great for riders with a more playful, active riding style who like to get off the ground and whip their wheels around. If you have a relatively short torso or arms for your height, you may find that a shorter reach makes it easier for you to hold the handlebars comfortably.
Effective top tube
Effective top tube is the horizontal distance from the centre of the head tube to the centre of the seat post. This measurement represents how a mountain bike fits while you’re sitting on the saddle. It’s important for cross country riders, who prioritise pedalling power.
Reach
Reach is the horizontal distance from the centre of the head tube to a vertical line that runs through the centre of the bottom bracket shell. This measurement represents how a mountain bike fits when you’re standing up on the pedals, like when you’re descending. Since most trail riders prioritise out-of-the-saddle riding, this tends to be the most helpful metric when comparing bike sizes from different brands.
General Size Guide
Our size guides are a helpful starting point, but they’re only a guide. For complete confidence, check the brand’s sizing advice or pop into one of our stores — because nothing beats sitting on your new bike to make sure it feels spot on.
General Bike Size Guide
Choosing the right bike size makes a huge difference to comfort, control and efficiency. Use the guide below to find the ideal frame size for your height and inside leg measurement.
What You Need
Your Height
Stand with your back against a wall, shoes off, feet together. Mark the wall above your head with a pencil, then measure from the floor to the mark.
Your Inside Leg Length
Stand with your back against a wall, shoes off. Place a book or ruler between your legs (as if sitting on a saddle) and measure from the floor to the top of the book/ruler. Having someone assist makes this easier.
Remember: This guide provides general sizing only. Different brands may vary. If you’re unsure, speak to the Bike Shed team on 01363 774773 or send us a message — we’re always happy to help.
Mountain Bike Sizing (Men)
Height
Inside Leg
Recommended Size
147–152cm / 4'10"–5'0"
66cm / 26"
13” (X Small)
152–160cm / 5'0"–5'3"
69cm / 27"
13”, 14” (X Small)
160–170cm / 5'3"–5'7"
71cm / 28"
15”, 16" (Small)
170–175cm / 5'7"–5'9"
76cm / 30"
17", 18” (Medium)
175–180cm / 5'9"–5'11"
79cm / 31"
18”, 19" (Medium, Large)
180–188cm / 5'11"–6'2"
81cm / 32"
19", 20” (Large)
188–196cm / 6'2"–6'5"
86cm / 34"
20", 21”, 22” (Large, X Large)
196cm+ / 6'5"+
91cm / 36"
23", 24” (XX Large)
Mountain Bike Sizing (Women)
Height
Inside Leg
Recommended Size
147–155cm / 4'10"–5'1"
66cm / 26"
13”, 14" (X Small)
155–160cm / 5'1"–5'3"
69cm / 27"
13”, 14” (X Small)
160–165cm / 5'3"–5'5"
71cm / 28"
15”, 16" (Small)
165–172cm / 5'5"–5'8"
76cm / 30"
17", 18” (Medium)
172cm+ / 5'8"+
79cm / 31"
19" (Large)
Road Bike Sizing (Men)
Height
Inside Leg
Recommended Size
147–152cm / 4'10"–5'0"
66cm / 26"
47–48cm (XX Small)
152–160cm / 5'0"–5'3"
69cm / 27"
49–50cm (X Small)
160–170cm / 5'3"–5'7"
71cm / 28"
51–53cm (Small)
170–175cm / 5'7"–5'9"
76cm / 30"
54–55cm (Medium)
175–180cm / 5'9"–5'11"
79cm / 31"
56–58cm (Large)
180–188cm / 5'11"–6'2"
81cm / 32"
59–60cm (X Large)
188–196cm / 6'2"–6'5"
86cm / 34"
60–62cm (X Large, XX Large)
196cm+ / 6'5"+
91cm / 36"
62–63cm (XX Large)
Road Bike Sizing (Women)
Height
Inside Leg
Recommended Size
147–155cm / 4'10"–5'1"
66cm / 26"
44–46cm (XX Small)
155–160cm / 5'1"–5'3"
69cm / 27"
47–49cm (X Small)
160–165cm / 5'3"–5'5"
71cm / 28"
50–52cm (Small)
165–172cm / 5'5"–5'8"
76cm / 30"
53–55cm (Medium)
172cm+ / 5'8"+
79cm / 31"
56–57cm (Large)
Hybrid Bike Sizing (Men)
Height
Inside Leg
Recommended Size
147–152cm / 4'10"–5'0"
66cm / 26"
13”, 14" (X Small)
152–160cm / 5'0"–5'3"
69cm / 27"
14”, 15” (X Small, Small)
160–170cm / 5'3"–5'7"
71cm / 28"
15”, 16" (Small)
170–175cm / 5'7"–5'9"
76cm / 30"
17", 18” (Medium)
175–180cm / 5'9"–5'11"
79cm / 31"
19”, 20" (Large)
180–188cm / 5'11"–6'2"
81cm / 32"
20", 21” (Large, X Large)
188–196cm / 6'2"–6'5"
86cm / 34"
21”, 22” (Large, X Large)
196cm+ / 6'5"+
91cm / 36"
23", 24” (XX Large)
Hybrid Bike Sizing (Women)
Height
Inside Leg
Recommended Size
147–155cm / 4'10"–5'1"
66cm / 26"
13”, 14" (X Small)
155–160cm / 5'1"–5'3"
69cm / 27"
14”, 15” (X Small, Small)
160–165cm / 5'3"–5'5"
71cm / 28"
15”, 16" (Small)
165–172cm / 5'5"–5'8"
76cm / 30"
17", 18” (Medium)
172cm+ / 5'8"+
79cm / 31"
19" (Large)
Special Order Enquiry 2025 Checkpoint ALR 4
Calculate finance options...
How much deposit?
£711
£145 (10%)
drag slider to change deposit
Total cost on finance:
£0.00
with a £ 0.00
deposit.
The total charge for credit is £ 0.00.
Choose an available finance option:
Unfortunately, no options
are
available.
WANT TO APPLY? To apply, add the item to your basket and apply for
finance on your entire basket.
Please note the above quotation is an indicative cost and actual monthly payments may vary by
+/- 2p per month.
Credit subject to status and affordability. Terms & Conditions Apply. Bike Shed is a credit broker and is Authorised and Regulated by the Financial Conduct Authority.
Credit is provided by Novuna Personal Finance, a trading style of
Mitsubishi HC Capital UK PLC, authorised and regulated by the
Financial Conduct Authority. Financial Services Register no.
704348. The register can be accessed through http://www.fca.org.uk.
24 Month Representative Example:
Purchase Price (incl. VAT) £750
Deposit £75
Loan Amount £675
Interest/Total Charge for Credit £109.32
Total Amount Repayable £859.32
Balance Payable £784.32
By 24 Monthly Repayments of £32.68
15.9% APR Representative
Bank rate of interest 8.1% PA fixed
Please note the above quotation is an indicative cost and actual monthly payments may vary.
For Buy Now Pay Later and Deferred Interest Bearing Credit: Interest is charged from day 1 of your agreement, but not charged on any repayments made during the deferral period. On expiry of the deferral period, interest accrued during the deferral period will be applied to your repayments.
This is for estimation purposes only. Actual Finance Application
is
Completed During Checkout.
