Radical SR9

{{Infobox automobile

| image = Radical SR9 (3733463772).jpg

| name = Radical SR9{{Cite web|url=https://www.supercars.net/blog/2006-radical-sr9/|title=2006 Radical SR9 | Radical|first=Nick|last=D|date=April 22, 2016}}{{Cite web|url=https://www.ultimatecarpage.com//spec/2751/Radical-SR9-Judd.html|title=2006 Radical SR9 Judd Specifications|website=Ultimatecarpage.com}}{{Cite web|url=https://www.racecar-engineering.com/cars/radical-sr9/|title=Radical SR9}}

| manufacturer = Radical Sportscars

| production = 2006

| assembly = Peterborough, UK

| predecessor =

| successor =

| chassis = Carbon-fiber monocoque

| class = LMP2

| layout = longitudinal mounted mid-engine, rear-wheel drive

| engine = {{ubl|Judd XV675 {{cvt|3.4|L|cuin}} 90° DOHC V8 naturally-aspirated| AER P07D {{cvt|2.0|L|cuin}} DOHC I4 naturally-aspirated}}

| transmission = Ricardo 6-speed sequential manual{{fact|date=September 2023}}

| weight = {{convert|775|kg|lb|1|abbr=on}}

| wheelbase =

| ftrack =

| rtrack =

| length =

| width =

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| designer = Peter Elleray

}}

File:Bruichladdich Bruneau - Radical SR9 AER (3956132645).jpg

The Radical SR9 is a sports prototype race car, designed, developed and produced by Radical for sports car racing, built to LMP2 regulations, produced in 2006.{{cite web|url=https://www.racingsportscars.com/type/Radical/SR9.html|title=Radical SR9|access-date=15 November 2022}}