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Transition Regulator CX Carbon MTB Eagle 90 Complete eBike Clear Blacknight. The all-mountain workhorse designed to provide a fun, nimble and responsive ride. 27.5" rear 29" front mixed wheel platform with 150/160mm of travel. Powerful BOSCH CX motor with 85nb of torque
Transition Regulator CX Carbon MTB Eagle 90 Complete eBike Clear Blacknight. The all-mountain workhorse designed to provide a fun, nimble and responsive ride. 27.5" rear 29" front mixed wheel platform with 150/160mm of travel. Powerful BOSCH CX motor with 85nb of torque
Transition

Transition Regulator CX Carbon MTB Eagle 90 Complete eBike Clear Blacknight

£8,899.00
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

Hassle free returns

We hope you are very happy with your Windwave purchases. However if for any reason you are not completely satisfied, you have 30 days from the date on which the goods were received to return any item for an exchange or a full refund.

For any Returns or Warranty enquiries, you will need authorisation from our Returns Manager to be considered prior to shipping. Please contact hollie@windwave.co.uk for details. Hollie will arrange a return and an email containing a returns form will be sent to you. Please complete the form, attach a copy of your proof of purchase, and place them in with your product.

We recommend that you take your package to a post office and send via recorded delivery (or similar), as Windwave cannot accept responsibility for any loss or damage that may occur during transit. You are fully responsible for the item up until the time that it has been received by us. We advise that you email us the tracking number so it can be added to your claim for reference.

It normally takes us about 10 working days to process a return once the returned items have been received into our warehouse. Upon inspection of the returned product, Windwave will issue a refund or process an exchange. A return confirmation email will be sent to you once your return has been processed.

In the unlikely event that an item is returned to us in an unsuitable condition, Windwave reserves the right not to refund the item and arrange to send the item back to you at your expense.

Please note that we can only offer exchanges for a like-for-like product in a different colour or size. Please also bear in mind that we cannot guarantee that a replacement product will be in stock when your return is processed. We therefore we recommend placing a new order and returning the original product for a refund.

Please note that returned products cannot be dropped back at our warehouse or offices. All returns must be sent via post.

For further information please see our Terms and Conditions.

Under the Consumer Rights Act of 2015 you have an early right to reject goods that are unsatisfactory quality, unfit for purpose or not as described, and get a full refund.

However, this right is limited to 30 days from the date you took ownership of the goods (this could be the date of purchase or the date the goods were delivered to you - whichever is later).

After the initial 30 days, you can't demand a full refund in the first instance, but you still have the right to a repair or replacement.

Refunds (if applicable)

Once your returned item is received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund.

If you are approved, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within 14 calendar days. If you paid for standard delivery of the goods, the cost of standard delivery will also be refunded.

There are certain situations where only partial refunds are granted (if applicable):

  • Books or other paper products with obvious signs of use;
  • Any item not in its original condition, which is damaged or missing parts for reasons not due to our error; and
  • Any item that is returned more than 30 days after delivery.

Late or missing refunds (if applicable)

If you haven’t received a refund yet, first check your bank account again.

Then contact your credit card company, it may take some time before your refund is officially posted.

Next contact your bank. There is often some processing time before a refund is posted.

If you’ve done all of this and you still have not received your refund yet, please contact Hollie at hollie@windwave.co.uk.

Sale items

We do not offer refunds for sale items, unless they are faulty.

Exchange (if applicable)

We only replace items if they are defective or damaged. If you need to exchange an item for the same item, please send Hollie an email at hollie@windwave.co.uk and post your item to:

Returns Dept.
Solent UK Ltd TA Windwave
Units D2-D3 Heritage Business Park
Heritage Way
Gosport
Hampshire
PO12 3SA

Shpping

To return your product, please mail your product to:

Returns Dept.
Solent UK Ltd TA Windwave
Units D2-D3 Heritage Business Park
Heritage Way
Gosport
Hampshire
PO12 3SA

Include your details and reason for returning.

You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. Depending on where you live, the time it may take for your exchanged product to reach you, may vary. If you are shipping an item over £50, you should consider using a trackable shipping service or purchasing shipping insurance as we cannot guarantee that we will receive your returned item.

Right to cancel

In addition to our Returns Policy, under the Consumer Contracts Regulations of 2013, you have the right to cancel your order up to 14 days from the day you receive your goods if you are an online, mail or telephone order customer. You then have a further 14 days from the date you notify the retailer of your cancellation to return the goods. The refund will include any standard delivery charges paid. You will be responsible for the cost of returning a cancelled order to us.

We will refund to you the price paid for the items and (unless you did not pay for delivery) the delivery charges that you paid up to a maximum amount of the cost of our standard delivery option. You will be refunded to your original method of payment within 14 calendar days of our receipt of the cancelled items or, if earlier, within 14 days from the day we receive proof of return from you. If we do not receive the cancelled items back, we may arrange to collect them from you at your cost.

To exercise your right to cancel please contact Hollie at hollie@windwave.co.uk.

Transition Regulator CX Carbon MTB Eagle 90 Complete eBike Clear Blacknight

Season:2026

Brand:Transition

Code:thginKLBRLC09E.XC.GER.62.

Transition Regulator CX Carbon MTB Eagle 90 Complete eBike Clear Blacknight

Image for colour illustration purposes, please see below for the list of components.

The all-mountain workhorse designed to provide a fun, nimble and responsive ride. 27.5" rear 29" front mixed wheel platform with 150/160mm of travel. Powerful BOSCH CX motor with 85nb of torque

Regulators, mount up!

The all-mountain workhorse is here to deliver fun on every trail.

The regulator cx is our all-mountain workhorse designed to provide a nimble and responsive ride with big power. No trail is too tame or gnarly for the dedicated mixed-wheel platform with 150/160 mm travel and geometry that promotes agility and playfulness. The regulator will be the choice for riders looking for a chassis that excels in a variety of terrain with the added assistance of a bosch performance cx drive unit. Known for its legendary reliability, the cx drive unit delivers 85nm of torque for a powerful and natural ride feel. Enclosed in the downtube is a 600 wh battery to power big rides while remaining sleek and lightweight for the category. For those looking for extra range, the 250wh bosch powermore range extender will power you up to 850wh for all-day adventures. This combination provides the best range-to-weight ratio for those who value lighter ride characteristics, giving you the best of both worlds with one of the most reliable, powerful, and intuitive motor systems available on the market.

Ride feel focus

the dedicated mixed-wheel platform with 150 mm rear and 160 mm front travel make the regulator cx nimble and responsive while delivering powerful assistance for the steepest of climbs.The bosch cx system delivers the highest power-to-weight ratio possible. Perfect for riders who want lighter ride characteristics from their emtb that excels in a wide variety of terrain.

Bosch flow app

for those looking to dig into the settings, the bosch flow app gives you full control and customization. Once paired with your regulator, you can adjust the power level support and peak power from the convenience of your phone without any wires or a laptop.

Bosch performance cx motor

powered by the bosch cx system, the regulator gets the legendary reliability of bosch in a lightweight package giving you 100 nm of torque and 600w peak power. While powerful, the system also provides an incredibly natural feel that delivers power without breaking traction, keeping your momentum and helping you clear technical trails.

Display

easily control the power modes and view battery life via the wireless mini remote and bosch kiosk 400c top tube display. This color display hosts a wealth of information from your bike's settings to stats from the ride.

Bosch powermore range extender

head deep into the backcountry with the additional powermore 250wh range extender. Custom cable management keeps the connection clean and secure.

Bosch 600 wh battery

enclosed low in the downtube is bosch's 600wh battery. It's perfectly sized to provide range for big rides without compromising ride characteristics, the 600wh battery provides the best range-to-weight balance.

150 mm rear, 160 mm front travel with mixed wheels

the regulator is all about making the most of every trail. Easily lay it over in turns, pop off every root, and zip your way back to the top for more. The mixed wheel platform, versatile geometry and 150/160 travel ensure you'll be having fun at all times.

Leverage curves

the giddyup suspension system is built to deliver great performance without overthinking setup, so you can just grab your bike and ride. It uses a balanced 27% progressive leverage curve with consistent rate change, paired with tuned anti-squat for efficient pedalling and smooth acceleration. Moderate chain growth, which decreases after sag, helps keep suspension active without interference from chain tension.

On trail, this creates a ride that's supple off the top, supportive through the mid-stroke, and ramps up smoothly at the end, working well with both air and coil shocks. A wide 27 to 33% sag range lets riders fine tune the feel from playful to planted, all without needing to fuss with extra adjustments.

  • Clean cable routing: cable routing ports are compatible with 0, 1, or 2 cables and allow brakes to be run on either side.
  • Charge port: our custom charge port door uses magnets to ensure it stays closed on even the rowdiest of descents.
  • Integrated protection: while a preinstalled loam hat keeps dirt and debris away from your main pivot bearings.
  • Integrated chainguide: the sleek and effective top guide keeps the chain in place while being easy to open for maintenance.



Please note: Delivery estimate is 4-5 working days from order.

Warranty Information

Lifetime Warranty

At Transition Bikes we take pride in the quality of our products and are stoked to offer a lifetime warranty for the original owner as well as our stellar crash replacement program.

The Crash Replacement scheme offers 50% off rrp for the original owner. For secondhand owners we offer 40% off rrp.

Transition Warranty

Technical Information

component compatibility

fork offset:44 mm
fork axle-to-crown:579 mm
headset (top):44 mm zero stack
headset (bottom):56 mm zero stack
chainline:55 mm
rear brake mount:180 mm post mount, max rotor size 223 mm
rear axle:transition axle for udh, 12 mm x 148 mm spacing
seat clamp:37.0 mm
seatpost diameter:31.6 mm
seatpost insertion depth:small 235 mmmedium 260 mmlarge 300 mmx-large 330 mm
tire maximum:27.5â x 2.6" (*see faq)

suspension specs

front travel:160 mm
rear travel:150 mm (compatible with 160 mm)
shock size:205 x 60 mm (compatible with 205 x 65 mm)
shock hardware:trunnion mount top / 30 x 8 mm bottom
sag setup:150 / 60 mm: 16 - 20 mm (26 - 32%)
bearings:2 x 6903, 2 x 6902, 6 x 6802, 2 x 6900


ebike specific specs

drive unit:bosch performance line cx (bdu38)
battery:bosch powertube (600 wh)
display:see specification chart above
controller:bosch wireless mini remote
range extender:compatible with bosch powermore 250 wh range extender

components

frameregulator cx carbon 150 mm
wheel sizemixed
drive unitbosch performance line cx (bdu38)
batterybosch powertube (600 wh)
displaybosch kiox 400c
assist switchbosch wireless mini remote
rear shockrockshox superdeluxe ultimate
(205 x 60 mm)
forkrockshox zeb ultimate
(160 mm)
headsetfsa no.57e
stemrace face aeffect r (40 mm)
handlebarrace face turbine
sm(780 x 20)
md(780 x 40)
lg/xl(800 x 40)
gripsodi elite flow lock-on
saddlesdg bel air 3
seatpostoneup dropper post
sm(150 mm)
md(180 mm)
lg(210 mm)
xl(240 mm)
brakessram maven silver
rotorssram centerline (200 mm)
shiftersram eagle 90 mmx
derailleursram eagle 90
cassettesram xs 1275 (10-52t)
chainsram GX eagle transmission
cranksram eagle 90
(150 mm)
chainringsram xx t-type direct mount (34t)
chainguidetransition integrated top guide
rimsdt swiss h 1900 spline 30
spokesdt swiss hybrid 1
hubsdt swiss hybrid 370
tyre/frontmaxxis assegai 3c maxxgrip exo+ (2.5)
tyre/rearmaxxis minion dhrii 3c maxxterra dd (2.4)
includedbosch charger, tubeless valves & sealant
weight48.1 lbs / 21.84 kg (size md)
Sizing Information






Speed Balanced Geometry

SMMDLGXL
HIGH/LOWHIGH/LOWHIGH/LOWHIGH/LOW
A.REACH425/420455/450480/475510/505
B.STACK623/628632/637641/646651/656
C.EFFECTIVE TOPTUBE LENGTH551/554583/587610/615643/648
D.SEATTUBE LENGTH375400440470
E.EFFECTIVE SEATTUBE ANGLE78.8/78.378.5/78.078.2/77.777.9/77.4
SADDLE HEIGHT FOR EFFECTIVE SEATTUBE ANGLE600660720780
ACTUAL SEATTUBE ANGLE75/74.575/74.575/74.575/74.5
SEATTUBE OFFSET AT BOTTOM BRACKET41414141
F.HEADTUBE LENGTH105115125135
G.HEADTUBE ANGLE64.5/64.064.5/64.064.5/64.064.5/64.0
H.CHAINSTAY LENGTH442/444442/444448/450448/450
I.WHEELBASE1201/12031235/12371271/12731305/1307
J.BOTTOM BRACKET DROP (FRONT)20/2520/2520/2520/25
J.BOTTOM BRACKET DROP (REAR)0/50/50/50/5
K.ESTIMATED BOTTOM BRACKET HEIGHT350/345350/345350/345350/345
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