Dodge Viper GT3-R (2013)
The Riley-built Viper GT3-R brought the 8.4-litre V10 to modern customer GT racing: an IMSA GTD class winner whose thunder and rarity now make it one of the most charismatic — and collectible — American GT3-era cars.
History
When SRT revived factory Viper racing with the GTS-R GTE programme, Riley Technologies built its customer twin: the Viper GT3-R of 2013, homologated for FIA GT3 and IMSA's GTD class around the production car's 8.4-litre V10 — the largest engine in the category by two litres — with a six-speed sequential, GT3 aero and the widest tyres the rules allowed.
Customer campaigns delivered the type's honours: Ben Keating's ViperExchange/Riley operations took IMSA GTD race wins including the class at the 2015 Rolex 24-adjacent rounds and Lone Star Le Mans, GTD championship top placings, and the model's signature — a soundtrack no BoP could regulate. European and Trans-Am-adjacent outings extended the fleet's reach after Dodge's 2017 road-car shutdown ended development.
With barely a dozen-plus built, the GT3-R sits today where rarity meets usability: welcome in GT 'legends'-forming grids, national GT and Trans-Am-style classes, supported by Riley's records and a devoted owner circle. As the last V10 customer GT — and America's loudest — its collector trajectory has already left ordinary classic-GT3 pricing behind.
Palmarès
IMSA GTD race wins 2014–2017 with ViperExchange/Riley (Lone Star Le Mans and endurance-round class victories among them); GTD championship runner-up placings; Trans-Am and national GT class results as the fleet dispersed — a concentrated record from one of GT racing's smallest production runs.
What to check before you buy
Riley Technologies' build records document the small fleet — chassis identity, update state and crash history come from the source, and Keating-provenance cars carry the collector premium. The V10 is understressed (rebuild intervals embarrass smaller rivals) but parts flow through specialist channels since Dodge's programme ended — buy spares inventory with the car. Check sequential and driveline service, GT3-era electronics generation, and homologation paperwork completeness for your target grids: FIA papers lapsed, so eligibility is series-by-series. Price against rarity, not spec-sheet comparables — nothing else sounds like it.
Did you know
- The GT3-R's 8.4 V10 was the largest engine in any FIA GT3 car ever homologated — BoP restricted it to numbers the torque curve laughed at.
- Ben Keating sold Vipers by day (America's biggest Viper dealer) and raced them by weekend — ViperExchange was the programme's name and business model.
- Riley built the cars in the same shops as its Daytona Prototypes — the Viper GT3-R shares assembly DNA with Rolex 24 overall winners.
In the marketplace now
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