Japanese Motorcycle Specialist

2XT Yamaha TZR250 race engine - full spec #2

Quick Overview

1988 2XT Yamaha TZR250, bottom end race engine. The 2XT is a very rare Japan only model, with bigger reed cage housing in the crankcases, bigger reeds and inlet manifolds making the inlet tract 25% larger than the 1KT model. This improves airflow and breathing performance. In addition the cylinders have different porting, with two additional auxiliary exhaust ports. These have nicosil bores, rather than the steel liner on the 1KT, allowing a closer running tolerance. All this results in a substantially more powerful engine. The 2XT was only produced for 6 months for the Japanese home market, making these engines are incredibly hard to find and much sought after

This engine has received a complete overhaul, stripped to bare cases, vapour blasted and rebuilt with all new parts:

-crankcases blasted, fitted with new gaskets and seals
-crankcases gas-flowed
-new YEC Yamaha F3 crank (brand new item, not a rebuilt item)
-straight cut primary gear set (the clutch plates are not shown in the photo, but will be included - we are building it at the moment)
-close ratio gearbox
-inlet manifolds and reed blocks

We can sell the engine as seen, or finish it off with cylinders/head and ancillary parts to your specification, from standard 2XT to full F3 kit.

Price guide:

Parts: brand new crank £400, brand new F3 crank £500, crankcases (vapour blasted) £275, pair cylinders £600 to £750 with good used piston & rings, powervalves £225 pair, manifold £250 pair, reeds £150 pair, close ratio box £400. Tuning top end £450 (full spec, cylinders, head, powervalves), gas flow cases £150, race straight cut primary gears £385.

We can sell individually or discount as a bundle. If the bottom end is built, then add cost of seals, bearings, gaskets and labour.

Availability: Out of stock

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2XT Yamaha TZR250 race engine - full spec #2

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Newly rebuilt

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