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Modified Fiat Abarth 124 Spider Track Build With Engine Swap

Home > Fiat > Modified Fiat Abarth 124 Spider Track Build With Engine Swap
Fiat Abarth 124 CCP Fabrication hard top and Black Miata flares

By

Matt Grabli
March 4, 2025

A sport car that gives you ultimate driving enjoyment at the race track doesn’t necessarily have to produce insane horsepowers. In fact, it should have a combination of qualities twisted together in a certain proportion to be called a proper “sports” car, just like this red Abarth 124 roadster that we’re about to review today!

Before diving into the specs of this caged track-ready roadster, let’s talk a little bit about the background of this model.

Abarth 124 on Coilovers and Forged Titan 7 Wheels 17x10
Fiat 124 Abarth Track Build

In the second part of the XX century, British racing fans and enthusiasts realized that there is a certain golden ratio of power to weight that works best at the track and on twisty country roads, which soon brought them to the idea that light and nimble cars with small displacement engines can bring just as much fun behind the wheel as the more expensive V8 and V12 supercars.

“British racing fans and enthusiasts realized that there is a certain golden ratio of power to weight that works best at the track”

Modified Abart 124 Spider

The key qualities of such cars were lightness, perfect weight distribution, precise handling, and rear-wheel-drive layout. Little by little, the brands such as Austin-Healey, MG, Triumph, and others have popularized the new image of compact sports cars, which quickly gained popularity among motoring enthusiasts around the world and changed the direction of the entire industry.

“The key qualities of such cars were lightness, perfect weight distribution, precise handling”

Fiat 124 Abarth Spider Custom front bumper spoiler

Table of Contents

Toggle
  • Fiat 124 Spider Abarth
    • Modern Generation
  • Fiat 124 Spider Performance Upgrades
    • CCP Fabrication HardTop
    • KA24 Honda Engine Swap
  • Fiat 124 Spider Mods list
    • Wheels
    • Coilovers & Upgrades
    • Exterior mods
    • Interior
    • Performance
  • Conclusion
    • Build Complexity Score: 10 out of 10

Fiat 124 Spider Abarth

In the late 60s, Fiat has launched a 124 convertible, which combined the best compact sports car traditions of that time. It was a rear-wheel-drive roadster with a sporty appearance and appealing design. For almost 20 years of production, it became incredibly popular in Europe and gained notable results in autosport.

Modern Generation

The modern generation of the 124 Roadster is sharing the chassis and other components (except for the engine) with the Mazda MX5 Miata ND, which in essence is the modern reincarnation of the same idea.

Abarth 124 Spider Kaze Space Engineering spoiler

The owner of this beautiful Abart 124 enjoys the sporty nature of this convertible and uses it as his track toy, that’s why, the majority of modifications are made to bump up the performance, handling, and safety, rather than just the looks.

Fiat 124 Spider Performance Upgrades

The car has got that wide functional stance to improve the cornering and handling. It sits low on a set of Ohlin custom long-stroke coilovers with 11k front, 6k rear, and 17” Forged Titan 7 Wheels wrapped in wide 275 Toyo Proxes RR tires. Rear arms and links as well as the front camber arms are developed by @phase2motortrend.

“The car has got that wide functional stance to improve the cornering and handling”

Kaze Space Engineering spoiler
APR rear diffuser and phase2motortrend rear suspension links

CCP Fabrication HardTop

Among the exterior upgrades are the half cage, custom welded to fit to the roofline of a CCP Fabrication hardtop, APR performance aero, Miata Carbon fiber fender flares, Kaze Space Engineering spoiler, and other. Thanks to the unification with MX5 Miata models, some exterior parts are interchangeable.

KA24 Honda Engine Swap

Performance-wise the car has been through various stages with the latest setup featuring a stock 1.4L Multijet engine with a stuffed turbo, E85 tune, and other upgrades by Euro compulsion.

Abarth 124 engine tune and k24 Honda swap

To drive the performance gains further, the owner decided to swap the stock engine with a famous K24 turbocharged motor by Honda, which is known for truly massive performance potential.

Abarth 124 Spider APR front bumper splitter for Time Attack

Fiat 124 Spider Mods list

Wheels

  • Forged Titan 7 Wheels 17×10 (15lb)
  • Toyo Proxes RR track tires 275 wide

Coilovers & Upgrades

  • Ohlin custom long-stroke coilovers with 11k front 6k rear. Carbon Miata flares
  • Phase2motortrend for developing all 10 rear arms and links, front camber arms

Exterior mods

  • Aero by APR
  • Carbon Miata flares
  • Kaze Space Engineering spoiler
  • Custom welded half cage
  • CCP Fabrication hard top

Interior

  • Sparco Circuit II bucket seats
  • Steering wheel hub extension, adaptor & Quick release by Phase 2 Motortrend

Performance

  • Full turbo back 2.75” Valved exhaust
  • Upgraded Intercooler
  • Stuffed turbo, E85 tune and other upgrades by Euro compulsion
  • Honda K24 engine swap upgrade on the way
Fiat Abarth 124 Spider Custom welded half cage rollcage
Abarth 124 spider Sparco Evolution racing seats and harness

Modern generation of the Abarth 124 Spider is manufactured for FCA (Fiat-Chrysler) on Mazda’s Hiroshima plant in Japan.

Abarth 124 Spider at the race track

Conclusion

Sharing a platform with a Mazda MX5 miata this Fiat offers a perfect set of base features to turn it into a track, which is exactly what has been done by it’s owner. He maxed out on improving every aspect of the build which resulted in one of th emost advanced Fiat 124 Abarth Spider builds. Based on our build compexity level it scored impressive 10 out 10 points possible.

Build Complexity Score: 10 out of 10

Parts CategoryDifficulty Rating*
Suspension Mods:10/10
Performance Mods:10/10
Exterior Mods:10/10
Interior Mods:10/10

* Based on our build difficulty evaluation system ⓘ

Abarth 124 Spider APR front bumper spoiler and splitter

Stay tuned for more convertible car reviews on Specs&Mods.com – Follow us on social media, and share this write-up if you enjoyed reading it!


Matt Grabli Avatar
Matt Grabli
With more than 10 years of experience as a mechanic and aftermarket performance parts specialist, Matt is specialized in vehicle modifications of any sort. He appreciates the motorsports heritage and keeps his hand on the pulse of modern trends. His life goals are documenting the diversity of the modern automotive culture and inspiring others to build the cars of their dreams! Connect with Matt on: FB, Pinterest, LinkedIn

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