Machined Swingarm Extenders + Dual Brake Caliper Mount For Sur Ron / Segway

£241.00
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Title
PLEASE NOTE THAT THE PART IN QUESTION IS RAW MACHINED ALUMINIUM AND NOT PAINTED LIKE IN THE PICTURES!!
This upgrade allows you to fit one more brake calliper in the rear and run double brake power for rear wheel, as well as extend the swingarm and wheelbase an additional 50mm.

Like all of our Sur-Ron upgrades, our parts are built with aircraft-grade aluminum that is miles ahead of stock Sur-Ron / Segway parts. 
  • Aluminium class 6
  • CNC machined

UAB Two Wheels Empire
A. Juozapaviciaus pr. 104B, LT-45108 Kaunas
hello@twowheelsempire.com
+37060154551

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What Our Clients Say About It?

Customer Reviews
5.0 Based on 1,052 Reviews
5 ★
96% 
1013
4 ★
3% 
33
3 ★
0% 
4
2 ★
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1
1 ★
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1
Customer Photos
SpeedBox 3.0 for Bosch 2014 - 2021 Motor (including Gen4) - Customer Photo From tom Edelstoni
SpeedFun Furious Evo easy+ for Bosch Performance Line CX (gen. 5) Smart System with Rim Magnet - Customer Photo From Alan H.i
SpeedFun Furious Evo easy+ for Bosch Performance Line CX (gen. 5) Smart System with Rim Magnet - Customer Photo From Alan H.i
SpeedFun Furious Evo easy+ for Bosch Performance Line CX (gen. 5) Smart System with Rim Magnet - Customer Photo From Alan H.i
SpeedFun Furious Evo easy+ for Bosch Performance Line CX (gen. 4) Smart System with Rim Magnet - Customer Photo From Attila A.i
SpeedFun Furious Evo easy+ for Bosch Performance Line CX (gen. 4) Smart System with Rim Magnet - Customer Photo From Attila A.i
badassBox 4 TQ X-Set for TQ 2020-2023 motors - Customer Photo From David R.i
SpeedFun Furious Evo easy+ for Bosch Performance Line CX (gen. 4) Smart System with Rim Magnet - Customer Photo From Anonymousi
SpeedFun Furious Evo easy+ for Bosch Performance Line CX (gen. 4) Smart System with Rim Magnet - Customer Photo From Anonymousi
SpeedFun Furious Evo easy+ for Bosch Performance Line CX (gen. 4) Smart System with Rim Magnet - Customer Photo From Anonymousi
SpeedFun Furious Evo F easy+ for Giant Syncdrive Pro 2 and Syncdrive Sport 2 - Customer Photo From Anonymousi
SpeedBox 1.2 for Bosch (Smart System + Rim Magnet) - Customer Photo From Ori V.i
SpeedBox 3.0 for Specialized motors - Customer Photo From Name L.i
SpeedBox 3.0 for Specialized motors - Customer Photo From Name L.i
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BB
04/10/2025
BERNARD B.
France

Speed i feedback

Six Bolts inserred into lower plastic part, covered bye thin plastic top, seams difficult to remove as we cannot remove top part without berlingot risk. However, it’s working fine, Max speed increased by 50%

SPEEDi for Specialized Levo Expert (2019 - 2023)
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PV
04/09/2025
philippe v.
France

commande et reception sans probleme mise en service facile

SpeedFun Furious Evo Easy per Brose
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RD
04/07/2025
Ron D.
United States

Peartune MSO 4.0 For Brose Sram motors only

I received the chip on Saturday and followed the installation instructions and their youtube video on instruction sheet. The chip did not function correctly. I turn on the bike and then it would shut off immediately. I have emailed Peartune directly but no response. I need to know how to...read moreI received the chip on Saturday and followed the installation instructions and their youtube video on instruction sheet. The chip did not function correctly. I turn on the bike and then it would shut off immediately. I have emailed Peartune directly but no response. I need to know how to return.

Peartune MSO 4.0 For Brose Sram motors only
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HC
04/07/2025
Hugo C.
United States

Giant Advanced E bike

Not sure yet I purchased a item that did not fit my application. The Tech support was awesome and they guided me to the correct part. Just a waiting to recieve new item. Keep you guys updated

SpeedBox 3.2 for Yamaha PW-SE / PW-X / PW-TE / PW-X2 / PW-ST motors
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