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E30 M3 2.5 liter Stroker Kit for S14 Engine

Mfg Part #
Turner Part #
Ships on Jul 3, 2018
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Product Details

One of our most popular items! We have been selling our S14 stroker kit since 1993. Since then we have sold HUNDREDS of this exact kit, and have received incredible feedback from our customers. RELIABLE Horsepower is our goal. Our E30 M3 2.5L Stroker kit uses factory BMW Evolution III parts to convert the stock 2.3 liter engine into the Evolution III 2.5 liter engine. Increasing the displacement and raising the compression yields much more torque: +50 ft/lbs @ 4000 rpm. With a stock head our 2.5 kit will make over 225 hp.

Our kit includes everything you need to convert your 2.3L into a 2.5L. We highly recommend upgrading the intake and exhaust system to allow larger 2.5L engine to breath. Call for more details and for "custom" packages. We can set you up with any other engine components you may want to replace (tensioner rails, chain guides, oil pump, etc) at the same time. For your benefit, we carry all these items (and at a great price).

The Turner 2.5 liter S14 Stroker Kit includes:

  • Genuine BMW 2.5L crankshaft w/ bearings, nut and spacer
  • 2.5L head gasket
  • Bottom end gasket set
  • Turner/Conforti Custom 2.5 Liter Computer Chip **Only available from us! This is what sets our kit apart from the "other guys kit"
  • Wiseco 2.5 forged piston set w/ rings (11.25:1 compression)
  • Genuine BMW rod bolts and head bolts (we suggest Genuine fasteners for reliability)

Kit Contents

Description Qty
Genuine BMW Screw 11121307135 10
Head Gasket - E30 M3 2.5L 1
Genuine BMW Guide-Bearing Shell Red 55,00mm(0) - 11211304032 2
Genuine BMW Bearing Shell, Red 55,00mm(0) - 11211304038 8
Genuine BMW Washer - 11231311993 1
Engine Hex Bolt 11231312980 1
Genuine BMW Connecting Rod Bolt 11241307140 8
Bottom-End Gasket Set - E30 M3 1
E30 M3 2.5L Turner/Wiseco 11.25:1 Piston 4
E30 M3 2.5-Liter Turner Motorsport Conforti Performance Chip 1

This Part Fits the Following BMWs

Make Model Submodel Engine
BMW E30 M3 S14 2.3L
*The above product applications have been written by Turner Motorsport. All warranties, product application, fitment, and performance are the responsibility of Turner Motorsport. For additional information see the terms of use.
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