Twenty21 12 Speed Cassette Shimano Microspline (10-52t)
Twenty21 cassettes fulfill the need for a dependable quality and impressive value cassette that is compatible with the latest 12 speed drivetrains.
Freehub Compatibility: Shimano Microspline
Tooth Count: 10-52t (10-12-14-16-18-21-24-28-32-36-42-52)
Material: High strength steel (10-42T) and 7075 Alloy(52T)
Weight: about 554g
FREE NEXT DAY DELIVERY ON ORDERS OVER £49* 🚚
All orders are dispatched using DPD Next Day Delivery*.
AM Delivery, Saturday or Sunday delivery also available.
*UK mainland only. We don't currently offer free postage to Highlands and Islands** which is a Two Day delivery.
We aim to dispatch orders same day when placed by 1pm, Monday - Friday.
Orders placed after 1pm Monday - Friday, on a Weekend or Bank holiday; will be dispatched on the next working day.
We use DPD to carry out our UK deliveries,
You will receive journey updates on your parcel via SMS, Email or DPD App notification.
DPD will give you a 1hr timeslot on your delivery day, you can track and follow your driver on their way to you.
Not going to be in? If you wish to reschedule, you can:
• Select an alternative delivery date
• Opt for delivery to a nominated neighbour
• Have the parcel left in a specified safe place
• Collect the parcel from your local DPD Pickup Shop
• Upgrade delivery to before 10:30, before 12, afternoon or a Saturday or Sunday.
Feel free to contact us or DPD directly to make any changes.
Complete Bike, Custom Built Bike and Wheel Orders -
These orders may take longer to dispatch, we build up custom builds to order - dispatch is normally within 1-2 days.
UK Delivery Options
Pick Up (Collection from Gloucester) - £0.00
Our store is based in Gloucester - Find out more.
Mainland UK – Next Day Delivery (Monday to Friday) - £4.99
Mainland UK – Next Day by 12.00 (Monday to Friday) - £11.99
Mainland UK – Saturday Delivery - £11.99
Mainland UK – Sunday Delivery - £11.99
UK - Scottish Highlands and Islands** – 2 Day Delivery - £15.99
UK - Isle of Man – 2 Day Delivery - £15.99
UK - Northern Ireland – 2 Day Delivery - £15.99
UK - Jersey and Guernsey – 2 Day Delivery - £20.00
**Scottish Highlands - AB36-38, AB55-56, FK17-21, IV1-39, IV52-54, IV63, KW1-14, PA21-40, PH19-26, PH30-41, PH49-50
Scottish Islands - HS1-9, IV40-51, IV55-56, KA27-28, KW15-17, PA20, PA41-49, PA60-78, PH42-44, ZE1-3
Isle of Man - IM
Jersey and Guernsey - JE, GY
Northern Ireland - BT
If your postcode is in one of these locations please choose the correct shipping whilst checking out (Not Mainland UK).
It genuinely costs us and DPD more to deliver to these islands and more remote postcode locations.
Selecting the correct option will avoid any delays dispatching your order.
You can find up-to-date pricing, offers and current information in the Cart/Checkout.
Worldwide Delivery Options
Please note, we don't offer shipping outside of the UK.
You can look into forwarding companies who would give you a UK address and forward your orders onto your country.
Some countries may incur VAT and Duty, please use a Duty Calculator and be prepared to pay these fees on arrival.
Please be aware that we will not cover these fees. If you are unable to pay your Duty fees the courier service may dispose the order.
If you have any questions, we are always happy to help. See our contact info at the bottom of the page. 😃
Pick Up from Slam69
Ordering online for collection? It's really easy!
1. Select Pick Up in the delivery options.
2. We'll pick and prepare your order for collection.
(Please wait for our notification that it's Ready for Pick Up)
3. Come and collect your order.
(Bring your confirmation email when you come to collect your order. Don't worry about printing it out, you can show us on your Phone)
We're open 9am - 5pm Monday to Friday and 9am - 12.30pm on Saturdays.
Unit 2 Pegasus Centre,
Gloucester Business Park,
We'll see you soon! 👋
No quibble easy returns, we have a 28 day return policy.
Changed your mind? Doesn't fit? No problem, simply pack your order back up, note down your Order number so we can identify it and return to us.
Our return address is:
Slam69 - Returns,
Unit 2 Pegasus Centre,
Gloucester Business Park,
Gloucester, GL3 4FF
The quickest way to exchange is to place a new order for the item you'd like to exchange to. You can return your unwanted item back to us for a refund.
If your item is covered by Warranty, we'll need to send this off for inspection to the brand's warranty. To start, please get in touch and send us your order number and pictures of what's happened.
Here at Slam69 we're passionate about doing our bit for the environment, after all we love the great outdoors, it’s our favourite place to be! We sell all second hand, used, ex-demo and old stock parts to help reduce waste and give them a new lease of life.
All our packaging is re-used, recycled or recyclable. We encourage you to re-use and recycle your mailing bag, box and packaging.
We also don't include paper Invoices or delivery notes in your delivery, you'll have a PDF Invoice in your Order confirmation email.
We're currently working with our suppliers to further reduce plastic packaging.
We use DPD as our courier for all online orders placed;
not only do they offer a phenomenal delivery service with excellent tracking, live updates and 1 hour time slot, it's next day delivery as standard.
They are also the UK's most sustainable delivery company, with a growing electric delivery van fleet, recycled and recyclable DPD packaging, a state of the art solar system at their Hinkley hub and more.
We are proud supporters of The Access Bike Project if you haven't heard of them, have a look at their website. They are an amazing community project that turn people’s old bikes into opportunities for our youth.
Any of our old bike parts that we cannot use or sell on our recycled page we donate to this awesome initiative.
Having your bike serviced? Upgrading? Have old parts taking up space in your garage? Donate your old bike parts to Access Bike. Here at Slam69 we have a collection point for any donations you may have. These guys are creative and innovative, even if parts are no longer fit for bikes, they will create something awesome!
Recently they organised a pub quiz fund raiser which raised them enough money to buy not one, but TWO new work stands, we were stoked to be able to help them attain a bargain price and order these in for them.
Thanks for checking out our small Independent Bike Shop.
We're a team of 5 who love bikes too! We run the Slam69 Website, Retail Store and Workshop in Gloucester.
You can find everything we stock online, anything you don't see just drop us a message! We're able to get hold of many products and brands from most UK suppliers.
Outdoors is our favourite place to be! 🌲 We strive to help the environment by reusing old and using recyclable packaging. We send out all orders with DPD, not only do they offer Next Day delivery as standard, they are also the UK's most sustainable delivery company.
Getting you back on your bike is priorty, so we're actively picking and dispatching your orders Monday - Friday with a 1pm cut off for same day dispatch. You'll also find us here in store building wheels, dream bike builds, repairing and servicing bikes to get you back rolling again. We're always on hand for any bike advice.
Come and see us! We're on the doorstep of Flyup417 Bike Park, Cranham Woods, Cotwolds Way and an hour away from the Forest of Dean.
Don't forget to tag us and #slam69, we love checking out your posts. Supporting, liking and sharing you too!