Cylinders Pistons and Heads

For gaskets click here; for cylinder base studs click here.

The standard bore is 54mm except for the 200, which is 48mm. The 200 Arrow cylinders are the same casting as the 250 models but with less machining, so can be bored out to 54mm.

The Suzuki pistons are virtually identical to the original Ariel pistons apart from the gudgeon pin diameter and are therefore supplied with a replacement small end bush. Like all 2 stroke pistons they will benefit from having the ports in the piston matched to the ports in the cylinder. Another improvement is to drill 2 small holes into the gudgeon pin bosses from inside the piston to aid lubrication to the fully floating gudgeon pin. The pistons are supplied with full instructions.

On low compression heads the spark plug is angled towards the front and is vertical on the high compression ones.

All cylinders are used and will require re-boring. We will supply the best cylinder that we have in stock but it should be noted there are few left that are without at least minor fin damage and the price shown in the price list is for a cylinder with minimal damage. The price will vary with the condition. It is common for the thin bridge across the bottom of the transfer port to be broken; this does not cause a problem.

Part No

Description

Per

Model

R16220Y

Dykes rings (‘L’ shaped for Dykes pistons only) Std, .015”, .020, .030 2 G

T14/U

Cylinder head, low compression 8.5:1, RH 1 A, S

T15/U

Cylinder head, low compression 8.5:1, LH 1 A, S

T18

Piston with rings, gudgeon pins, circlips, std, pair, Suzuki 1 Not H

T18/2

Piston rings, standard, 1 piston set of 2 rings, original pistons only 2 Not H

T18/3

Piston with rings, gudgeon pins, circlips and small end bush, +020, Suzuki, pair 1 Not H

T18/5

Piston rings, +020, 1 piston set of 2 rings, original pistons only 2 Not H

T18/6

Piston with rings, gudgeon pins, circlips and small end bush, +040, Suzuki, pair 1 Not H

T18/7

Piston with rings, gudgeon pins, circlips and small end bush, +060, Suzuki, pair 1 Not H

T18/14

Piston with rings, gudgeon pins, circlips and small end bush, +080, Suzuki, pair 1 Not H

T18/8

Piston rings, +040, 1 piston set of 2 rings, original pistons only 2 Not H

T18/9

Gudgeon pin, original pistons only 2 Not H

T18/9/S

Gudgeon pin, Suzuki pistons only 2 Not H

T18/10

Circlip, gudgeon pin, original pistons only 4 Not H

T18/10/S

Circlip, gudgeon pin, Suzuki pistons only 4 Not H

T18/13

Small end bush, Suzuki pistons 2

T18/SR/05

Piston rings, +020, 1 piston set of 2 rings, Suzuki pistons only 2 Not H

T18/SR/10

Piston rings, +040, 1 piston set of 2 rings, Suzuki pistons only 2 Not H

T18/SR/15

Piston rings, +060, 1 piston set of 2 rings, Suzuki pistons only 2 Not H

T18/SR/STD

Piston rings, standard, 1 piston set of 2 rings, Suzuki pistons only 2 Not H

T20/1

Piston rings, standard, 1 piston set of 2 rings 2 H

T20/2

Piston rings, +020, 1 piston set of 2 rings 2 H

T20/11

Piston circlip (T218) 4 H

T205

200cc piston, STD, complete 1 H

T31

Small end bush for original or Hepolite pistons 2 All

T37U

Head sleeve nut, hexagon socket, used and re-plated 8 All

T40/020U

Cylinder barrel, LH, + .020” oversize 1 A,B,S,T,G

T40/30AU

Cylinder barrel, LH, + .030, perfect fins 1 A,B,S,T,G

T40/040U

Cylinder barrel, LH, + .040” oversize 1 A,B,S,T,G

T40/060U

Cylinder barrel, LH, + .060” oversize or T40/060AU parfect fins 1 A,B,S,T,G

T40/STDU

Cylinder barrel, LH, standard size or T40/STDAU perfect fins 1 A,B,S,T,G

T41/020U

Cylinder barrel, RH, + .020” oversize or T41/020AU with perfect fins 1 A,B,S,T,G

T41/040U

Cylinder barrel, RH, + .040” oversize or T41/040AU with perfect fins 1 A,B,S,T,G

T41/060

Cylinder barrel, RH, + .060” oversize or T41/060AU with perfect fins 1 A,B,S,T,G

T41/STD

Cylinder barrel, RH, standard size or T41/STDAU with perfect fins 1 A,B,S,T,G

T41/200

Cylinder barrel, 200cc Arrow 1  H

T43

Head gasket 2 A,B,S,T,G

T43A

Head Gasket 2 H

T55

Cylinder base 2 All

T70

Washer, cylinder head sleeve nut 8 All

T135/U

Cylinder head, high compression 10:1, RH 1 B, T, G, H

T136/U

Cylinder head, high compression 10:1, LH 1 B, T, G, H

T2050

Exhaust pipe screw in retaining ring 2 All

T2051

Exhaust pipe sealing ring 2 All
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