To improve your shopping experience today and in the future, this site uses cookies.
I Accept Cookies
E*Thirteen

E-Thirteen Grappler Sidekick Flux 66 Alloy 27.5 Boost Rear Wheel - Black

£329.95
Earn
in Customer Rewards when you buy this item today
Pre-Order

With Pre-Order, you can purchase the latest items added to our store in advance of them arriving with us.

Your Pre-Order is prioritised (at no additional charge); meaning that as soon as the product arrives with us, we can wrap it straight back up; ready for collection via Click & Collect or despatch to you — it often never even hits the stock room shelves!

Pre-Launch

With Pre-Launch, the date when we expect to receive the product ourselves is still a little too hazy to be confident in accepting Pre-Orders.

So, instead, you can submit your email address against the item you are interested in and we will email you as soon as stock arrives on the system.

Estimated Delivery & Collection Dates

Estimated Delivery & Collection Dates are given on Pre-Order and Pre-Launch products. They are for indication purposes only and can change at any time without notice.

The dates we provide are based on indications given by our suppliers. Whenever we get updated information from our suppliers we will endeavour to update the Estimated Delivery & Collection Dates provided on product pages.

We estimate this will be ready for despatch to you or collection via Click & Collect on Undetermined
Earn Rewards
When you purchase this item, you will earn of rewards points to spend on your next purchase from us. You can spend your Rewards balance in-store & online.

Hassle free returns

Warranty

Cycle Solutions offer a full 18-month warranty on bikes purchased through our online shop, in line with the guidance set out in the Consumer Rights Acts 2015.

In the unfortunate event of your purchase being affected by a warranty-covered fault, please inform us by email ([email protected]). Please note that our Aftersales Department's operating hours are 09:00AM to 17:30PM Monday to Friday.

Once a warranty claim has been placed we will review the claim and advise on an appropriate course of action, please do not return your item until you have spoken to an advisor.

Please allow a minimum of 15 working days from receipt of returned item(s) for repair/replacement under warranty. We expect to be able to return the items within a maximum 30 working days, however, specific timescales can change based on the requirements of the individual case.

Most bikes and accessories are covered by a standard manufacturer's warranty but please be aware that there are faults/issues that are NOT covered by your warranty. This includes;

  • Any normal wear and tear from using the product
  • Improperly installed or repaired products (always follow the instruction guides for any product set-up or installation)
  • Modifications to products
  • Stripped pedal threads - a comprehensive guide on the correct installation of pedals is sent out with every bike
  • E-bike batteries and associated componentry

Returns

We operate a 365-day return policy so that if you change your mind, the unused items can be returned to us so that you can purchase with complete peace of mind.

Once you have spoken to our aftersales department, you may need to return the item, you can arrange this via any courier/delivery service that you choose.

Please contact us in advance if you wish to return a bike

If a bike needs to be returned due to an incorrect size being ordered, or the item is no longer wanted or ordered in error, then collection can be arranged at a cost of £40.00. If you do not wish to use our collection service then any alternative return method will need to be arranged at your own cost.

Any Other Returns

Before sending your item back, please download and complete our returns form, completing all relevant sections and including this with your return - if your item is returned without the form included it can take significantly longer to correctly process the item and review the issue.

Returns Form

Item/s must be returned in the original packaging (in a resaleable condition), unused and unopened within 14-days of notification to cancel.

Proof of postage will be required as Cycle Solutions is unable to accept liability for loss or damage whilst in transit back to us.


Additional non-returnable items:

· Any products that due to hygiene reasons, cannot be returned. This includes all undergarments (including socks) as well as padded shorts,bibshorts, tights, etc

· Downloadable software products

· Some health and personal care items

· CD/DVD's or software that have been opened

· Any Food or drink products that, upon return, will be within 3 months of the sell-by date

· Gift cards

· Customised bike orders

Your refund will be done with 30 days of receipt of returned goods and will not be done until the goods are received and inspected.

Please do not send your purchase back to the manufacturer.

Returning a product under the WEEE Regulations.

What do the WEEE regulations mean?

WEEE (The Waste Electrical and electronic Equipment) Directive is UK law that governs the disposal and recycling of all electrical items. The law, introduced in 2014, puts the emphasis on the producers and suppliers of electrical equipment to pay for the collection, treatment and recovery of waste electricals.

As a retailer that sells new Electrical and Electronic products we will take back old items, provided it is a like-for-like replacement when you buy a new product from us. We will then responsibly dispose of the old product ensuring that it doesn’t end up in landfill.

Old products must be returned directly to our shop or head office (details below) within 28 days of your new purchase, clearly marked as WEEE.

Cycle Solutions Head Office
6 Europa way
Fforestfach
Swansea
SA5 4AJ

Disposing of equipment yourself

If you choose not to send your equipment back to us for disposal then you can dispose of any electricals or electronics yourself at your local recycling centre, who will dispose of your equipment via a controlled recycling process.

You can locate your closest collection site by entering your postcode at www.recycle-more.co.uk

What products fall under WEEE Regulations?

As part of the WEEE regulations, all electrical and electronic goods produced after August 2005 that fall under WEEE regulations should be clearly marked with a crossed-out bin symbol which means they should not be included with household waste so that they can be recycled

As a responsible retailer we take all steps possible to ensure that our business meets all requirements of any EU & UK consumer protection laws, particularly the Consumer Contracts (Information, Cancellation & Additional Charges) Regulations 2013 and other legislation specific to the products that we sell.

If you have any concerns or questions regarding this process, please contact us at [email protected].

Warranty

Uprise offer a full 18-month warranty on bikes purchased through our online shop, in line with the guidance set out in the Consumer Rights Acts 2015.

In the unfortunate event of your purchase being affected by a warranty-covered fault, please inform us by email ([email protected]).

Please note that our Aftersales Department's operating hours are 08:30AM to 17:30PM Monday to Friday.

Once a warranty claim has been placed, we will review the claim and advise on an appropriate course of action, please do not return your item until you have spoken to an advisor.

Please allow a minimum of 15 working days from receipt of returned item(s) for repair/replacement under warranty. We expect to be able to return the items within a maximum 30 working days, however, specific timescales can change based on the requirements of the individual case.

Most bikes and accessories are covered by a standard manufacturer's warranty but please be aware that there are faults/issues that are NOT covered by your warranty. This includes.

  • Any normal wear and tear from using the product.
  • Improperly installed or repaired products (always follow the instruction guides for any product set-up or installation)
  • Modifications to products
  • Stripped pedal threads - a comprehensive guide on the correct installation of pedals is sent out with every bike.
  • E-bike batteries and associated componentry

Returns

We operate a 365-day return policy so that you can purchase with complete peace of mind.

Once you have spoken to our aftersales department, you may need to return the item, you can arrange this via any courier/delivery service that you choose.

Bikes

Please contact us in advance if you wish to return a bike as Collect+ will not accept large items

If a bike needs to be returned due to an incorrect size being ordered, or the item is no longer wanted or ordered in error, then collection can be arranged at a cost of £40.00. If you do not wish to use our collection service then any alternative return method will need to be arranged at your own cost.

Any Other Returns

Before sending your item back, please download and complete our returns form, completing all relevant sections and including this with your return - if your item is returned without the form included it can take significantly longer to correctly process the item and review the issue..

Returns Form

Item/s must be returned in the original packaging (in a resaleable condition), unused and unopened within 14-days of notification to cancel.

If Collect+ is not being used, then proof of postage will be required as Cycle Solutions is unable to accept liability for loss or damage whilst in transit back to us.


Additional non-returnable items:

Any products that due to hygiene reasons, cannot be returned. This includes all undergarments (including socks) as well as padded shorts, bibshorts, tights, etc

• Downloadable software products

• Some health and personal care items

• CD/DVD's or software that have been opened

• Any Food or drink products that, upon return, will be within 3 months of the sell-by date

• Gift cards

• Customised bike orders

Your refund will be done with 30 days of receipt of returned goods and will not be done until the goods are received and inspected.

Please do not send your purchase back to the manufacturer.

Returning a product under the WEEE Regulations.

What do the WEEE regulations mean?

WEEE (The Waste Electrical and electronic Equipment) Directive is UK law that governs the disposal and recycling of all electrical items. The law, introduced in 2014, puts the emphasis on the producers and suppliers of electrical equipment to pay for the collection, treatment and recovery of waste electricals.

As a retailer that sells new Electrical and Electronic products we will take back old items, provided it is a like-for-like replacement when you buy a new product from us. We will then responsibly dispose of the old product ensuring that it doesn't end up in landfill.

Old products must be returned directly to our shop or head office (details below) within 28 days of your new purchase, clearly marked as WEEE.

Uprise Bikes

6 Europa way

Fforestfach

Swansea

SA5 4AJ

Disposing of equipment yourself

If you choose not to send your equipment back to us for disposal then you can dispose of any electricals or electronics yourself at your local recycling centre, who will dispose of your equipment via a controlled recycling process.

You can locate your closest collection site by entering your postcode at www.recycle-more.co.uk

What products fall under WEEE Regulations?

As part of the WEEE regulations, all electrical and electronic goods produced after August 2005 that fall under WEEE regulations should be clearly marked with a crossed-out bin symbol which means they should not be included with household waste so that they can be recycled

As a responsible retailer we take all steps possible to ensure that our business meets all requirements of any EU & UK consumer protection laws, particularly the Consumer Contracts (Information, Cancellation & Additional Charges) Regulations 2013 and other legislation specific to the products that we sell.

If you have any concerns or questions regarding this process, please contact us at [email protected].

E-Thirteen Grappler Sidekick Flux 66 Alloy 27.5 Boost Rear Wheel - Black

Season:Core Range

Brand:E*Thirteen

Code:WH5GKA27.5Boost

Ride harder, ride longer

Feel the trail in a cleaner, calmer way. The Grappler Sidekick Flux 66 lets you push faster and land harder with less buzz through your hands. It smooths chainshock, so your suspension works truer. That means more traction, less fatigue and more confidence on steep lines, bikepark laps and enduro stages.

Why it changes the ride

Kickback and drivetrain thumps steal momentum and unsettle your suspension. The Sidekick hub soaks that up at the source. The Flux 66 rims add purposeful compliance where you want it—grip and comfort—without making steering vague. The result is a quieter, livelier wheel that keeps you faster for longer.

How it performs on trail

  • Pedal inputs feel crisper and cleaner. Drive-side stiffness and reinforced lacing transfer power without unwanted flex.
  • Hits feel filtered, not rattling. The adjustable Sidekick deadband reduces kickback and drivetrain vibration so your suspension can stay settled.
  • Cornering feels planted. The low-profile Flux 66 aluminium rim adds radial compliance that helps traction and control.
  • Rolling is smooth and nearly silent. Low freehub drag lets you carry speed with less effort.

Build you can rely on

These wheels use the same Sidekick anti-kickback tech and 6069-AL rim extrusions found in our pro-level aluminium range, but tuned for value and durability. They’re hand-built with double-butted spokes, Secure Lock brass nipples and AL-6069 sleeved rims. The 32-spoke build uprates durability and stability where terrain gets technical. Tubeless tape is included so you can get out the door sooner.

Key Features:

  • Sidekick hub with adjustable deadband (9°, 13°, 18°) to eliminate pedal kickback and filter drivetrain vibration
  • Flux 66 low-profile AL-6069 rims for traction, compliance and durability
  • Rear-tuned build for drive-side stiffness and crisp power transfer
  • Freehub options: SRAM XD and Shimano HG
  • Nearly silent, low-drag freehub for better rolling speed
  • 32h drilling with double-butted spokes and Secure Lock brass nipples
  • Hand built and value-oriented, with a huckproof focus
  • e-Bike compatible and includes tubeless tape
  • Backed by a 5-year warranty and rim crash replacement policy

Specifications

  • Size: 27.5"
  • Weight: 1125 g
  • Internal rim width: 30 mm
  • Rim material: Alloy (AL 6069), hookless, 6-bolt
  • Rim protection: 10 Years
  • Drilling: 32h
  • Hub: Sidekick hub, 3-pawl, fully machined aluminium body
  • Freehub mount: SRAM XD, Shimano HG
  • Spokes/Nipples: Double-butted spokes, Secure Lock brass nipples, nipple washers
  • E-Bike Compatible: YES
  • Included: Wheel, tubeless tape

Take them for a lap, and you’ll notice the difference. Quieter hubs, softer landings, sharper exits. Go on—send it.

Sizing Information
Professional Opinion
Product Reviews
Write a review
0 As rated by 0 customers

Write a review for E-Thirteen Grappler Sidekick Flux 66 Alloy 27.5 Boost Rear Wheel - Black

Your name
Your email address
How would you rate it?
Would you recommend this product?
Let others know your opinion
Submit Review Close
Question(s) answered about E-Thirteen Grappler Sidekick Flux 66 Alloy 27.5 Boost Rear Wheel - Black
Ask a question
Question(s) asked regarding E-Thirteen Grappler Sidekick Flux 66 Alloy 27.5 Boost Rear Wheel - Black

Ask a question

Your name
Your email address
Your phone number
Your question
Submit Question  Close
Home Mountain Biking Components E*Thirteen Wheels