Cylinders & Pistons

PI-MON4-80 is 79.95mm for 280cc + 300cc 2016 to 2020 PI-MON4-815 is 81.475mm for 301cc 2019 to current PI-MON-82 is 81.975mm for S3 300cc cylinder only and not Montesa...

S3 replacement piston kit for the Montesa Cota 315R manufactured by Vertex.Comes complete with Piston Rings, C-Clips & Gudgeon Pin.Size A - 72.175Size B - 72.185 Piston...

Rings for S3 Trial Racing Pistons Long Life. Nitrurated steel. 54mm Piston Rings for most 125cc models including GASGAS PRO, BETA, SHERCO, SCORPA,. Not for GASGAS EDITION model which has...

Rings for S3 Trial Racing Pistons Long Life. Nitrurated steel. 56mm Piston Rings for GASGAS EDITION model ONLY.

Rings for S3 Trial Racing Pistons Long Life. Nitrurated steel. 64mm Piston Rings for GASGAS 200cc ONLY.

Rings for S3 Trial Racing Pistons Long Life. Nitrurated steel. 71 mm Piston Rings for old GASGAS 237cc ONLY.

Rings for S3 Trial Racing Pistons Long Life. Nitrurated steel. 72.50mm Piston Rings for most 250cc models including GASGAS PRO, BETA, SHERCO, SCORPA, TRS, VERTIGO

Rings for S3 Trial Racing Pistons Long Life. Nitrurated steel. 74mm Piston Rings for GASGAS 270cc EDITION model ONLY.

Rings for S3 Trial Racing Pistons Long Life. Nitrurated steel. 76.00mm Piston Rings for; BETA 270cc / SHERCO 290cc / GASGAS 280cc / VERTIGO 280cc / TRS 280cc

Rings for S3 Trial Racing Pistons Long Life. Nitrurated steel. 79.00 x 1.2 mm Piston Rings for; BETA 300cc / SHERCO 300cc / GASGAS 300cc / VERTIGO 300cc / TRS...

Rings for S3 Trial Racing Pistons Long Life. Nitrurated steel. 83.50 mm Piston Rings for old GASGAS 321cc ONLY.

Superb quality longlife S3 Racing piston kit, kit includes piston, rings, gudgeon pin and clips.Fits:GasGas Pro 300 - 2002 onwards - Standard, Racing, Raga and Factory models.TRS 300 - 2016...

Superb quality longlife forged S3 Racing piston kit to fit:GasGas Pro 280cc from 2002 to presentTRS 280cc from 2016 to presentVertigo 280cc from 2020 to presentKit includes piston, rings, gudgeon...

Superb quality longlife S3 Racing piston kit for the following bikes:GasGas Pro 250 - 2002 onwardsTRS One / RR / Gold 250 - 2016 onwardsVertigo 250 - 2017 onwards Kit...

250cc – PI-SH-TR250 290cc – PI-1280 300cc – PI-1300 Composition & treatment:• Top quality Aluminium-Silicium alloy• Casted or forged• Molybdenum disulfide protective layer.• Equiped with nitrided steel rings Features:• Lightweight...

S3 Cylinder head inserts for Beta Evo 125.250, 290 & 300 models

S3 Stars Cylinder Head, Outer part only. 2014 to 2022 This Outer is the latest S3 Head for GAS GAS TXT 250/280/300 with the horizontal water hose outlet part number...

Change compression of your S3 STARS cylinder head on your GG PRO125… There are 3 available….VERY VERY HIGH(AAA), VERY HIGH(AA), HIGH(A).

Change compression of your S3 STARS cylinder head on Sherco. There are Low, Standard and High compression inserts available for 250cc and 290cc and 300cc THESE ARE THE SAME FITMENT...

Specific compression inserts design, offers the possibility to adapt engine setting to your choice and needs

This Outer is the older type S3 Head with the vertical water hose outlet for GG TXT 250/280/300 models up to 2014. If you need an insert make sure you...

These inserts are ONLY compatible with the new type horizontal outer head (part number ST-1060-R). SEE PHOTO of the new type horizontal head that only these inserts fit. If you...

These inserts (part number ST-GG-IN-???) are compatible with the old type vertical and old type horizontal water hose outer head. SEE PHOTOS. If you want fairly flat power...

Complete kit with; 1 x outer head 1 x inner ‘A’ HIGH comp head (red) 1 x inner’AA’ VERY HIGH comp head (black) 1 x inner ‘AAA VERY VERY HIGH...

S3 Beta cylinder heads S3 Cylinder heads can hold more water flow and have stronger walls, helping with the cooling rate, this...

Cylinder Head Outer for Sherco 125cc models with the O-ring grooves on the Cylinder and not the head only. Titanium colour only

MONTESA COTA 315 New kit Cylinder head + Inserts ready to assemble and enjoy new sensations! Two different inserts: RED: for 250c.c....

S3 Cylinder heads can hold more water flow and have stronger walls, helping with the cooling rate, this improves low and high revs power. Amazing Racing look! New kit cylinder...

New kit cylinder head + insert + o-rings ready to ride and enjoy new sensations! *All TXA/TXB kits include: cylinder head, insert and O-rings. Adapt your...

This will fit the standard GASGAS cylinder head (outer) Low compression for perfect grip on muddy conditions, smoother power delivery

New kit cylinder head + insert + o-rings ready to ride and enjoy new sensations! *All TXA/TXB kits include: cylinder head, insert and O-rings. Adapt your...

KIT CYLINDER-PISTON BIG-BORE FOR MONTESA-HRC 300cc 4RT. High quality product. More capacity gives the engine more torque on bottom and more power on revs. The engine is very smooth on...

The Kit INCLUDES:          Cylinder          Complete piston          Gasket set + o-rings.  Fits with Gas Gas Trial TXT 2002-2022

Piston MM 22625A 75.95mm 22625B 75.96mm 22625C 75.97mm 22625D...

Piston MM 22674A 72.75mm 22674B 72.76mm 22674C 72.77mm 22674D...

Piston MM 22624A 63.95mm 22624B 63.96mm 22624C 63.97mm 22624D...

Piston MM 22623A 55.95mm 22623B 55.96mm 22623C 55.97mm 22623D...

Piston MM 22766A 53.95mm 22766B 53.96mm 22766C 53.97mm 22766D...

Piston MM 22766A 53.95mm 22766B 53.96mm 22766C 53.97mm 22766D...

S3 Stars Cylinder Head, Outer part only.This Outer is the latest S3 Head for GAS GAS TXT 250/280/300 with the horizontal water hose outlet part number ST-1060If you need an...

A – 72.46 B – 72.47 C – 72.48

A - 53.95B - 53.96C - 53.97

A - 78.95B - 78.96C - 78.97D - 78.98