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Crankshaft


Crankshaft & Piston Attribute:
1.    Crankshaft Assembly
2.    Piston
3.    Piston Assembly

4.    Piston Rings
5.    Woodruff Keys 4x13.8
6.    Wrist Pin
7.    Wrist Pin Clips


The piston rings placement on the piston is crucial to proper compression and oil distribution.


•    Top Ring if it has writing usually will have a 1 and or a single letter that needs face visible top. The top ring is usually polished as well.

•    2nd Ring if it has writing will usually have 2 and or a letter or pair of letters that needs also face visible top.

•    Expanding Ring is the wavy ring on the inside with the two thin flat smooth Side Rings on the top and bottom. They make a group called the Oil Rings.

•    Gapping the rings in reference to the other rings.  The Mercede's Benz Logo helps to remind of their 120-degree rotational offsets.


Scooter cam chains, cam gears, camshafts, CVT covers, crankcases, cylinder heads, cylinders, driven pulleys, kickstarts, oil pumps, pistons, starter clutches, tensioners, transmissions, valves, and variators.

Brand: G Model: 151-122
Description: G- Woodruff Key for 49cc-50cc 4-stroke 139QMB engines. Standard clutch-side woodruff key for QMB engines. Just wedge for positioning for the alternator rotor side of the crankshaft. Sold individually. Specifications: Include the following woodruff key (1 piece).•    Lengt..
$1.99
Brand: G Model: 164-111
Description: Standard Crankshaft Assembly for 150cc and 125cc GY6 4-stroke engines.Specifications: •    Overall Stroke: 57.8mm•    Overall Length: 285mm•    Piston Wrist Pin Slot I.D: 15mm•    Flywheel Shaft Thread: M12 x 14mm•  &..
$52.00
Brand: G Model: 164-112
Description: GY6 woodruff key for 125cc and 150cc GY6 4-stroke engines. Standard clutch-side woodruff key for GY6 engines. Just wedge for positioning for the alternator rotor side of the crankshaft. Sold individually. Specifications:Include the following woodruff key (1 piece).•    Le..
$1.99
Brand: Hoca Model: 169-47
Description: Hoca Brand +2.5mm Stroker Crank increases standard stroke by 2.5mm-more displacement equals more power!Specifications:•    Base Stroke: 57.8 +2.5mm•    Overall Stroke: 60.3mm•    Overall Length: 285mm•    Piston Wrist Pin Slot ..
$172.00
Brand: Naraku Model: NK101.70
Description: OEM Replacement Naraku Crankshaft Needle Bearing 17mm (OD) x 12mm (ID) x 13mm (W) and cage assemblies for the crankshaft and piston pins for Honda Dio (AF16-AF18E) engines. OEM quality small end bearing (17x12x13mm) by Taiwanese manufacturer Naraku. Suitable for use in original and slig..
$15.95
Brand: Naraku Model: NK102.07
Description: Naraku GY6 Oil Seal Set, complete set of 4. This is a complete set of genuine Naraku oil seal set for the GY6 4-stroke 125-150cc Kymco engines (scooters), and most Chinese imported vehicles 125/150cc (scooters, quads, and buggies). Set includes 4-piece oil seals.Specifications:Includes ..
$14.95
Brand: NCY Model: 1100-1393
Description: NCY Piston Rings made by Prima for your Genuine Buddy 50cc scooter. Will fit NCY Prima Cylinder Kit: 47mm, 10mm Pin, 72cc.Specifications:•    47mm Piston Rings Set•    Fits Part #PRCK1Supported Models: Genuine Buddy 50, Roughhouse 50, Genuine Buddy 50, Mina..
$28.00
Brand: SSP-G Model: 169-239
Description: SSP-G Crankshaft 44mm Performance Stroker 16-Teeth (139QMB) increases standard stroke by 2.5mm-more displacement equals more power! When used in conjunction with a 52.4mm cylinder big bore, total displacement cranks out at a whopping 94.9cc! The crank is pre-pressed with main bearings a..
$189.95
Taida Big Bore Combo 62mm 174.5cc LC 2V w/Forged Piston Fit 54mm (GY6) Taida Big Bore Combo 62mm 174.5cc LC 2V w/Forged Piston Fit 54mm (GY6)
10 - 14 Days
Brand: Taida Model: GY6-090-2V54-175-LC
Description: Liquid Cooled Taida Cast-Iron Cylinder 62mm 174.5cc with Forged Aluminum Piston offer better durability and reduced friction for 54mm stud GY6 125/150cc + engines. The cylinder bore is 62mm. Taida Big Bore Combo 62mm 174.5cc 2V w/Forged Piston Fit 54mm including the following parts Taid..
$738.52
Taida Big Bore Combo 63mm 180cc C 2V w/Forged Piston Fit 54mm (GY6) Taida Big Bore Combo 63mm 180cc C 2V w/Forged Piston Fit 54mm (GY6)
10 - 14 Days
Brand: Taida Model: GY6-090-2V54-180
Description: High-Quality Taida Ceramic Cylinder 63mm 180cc with Forged Aluminum Piston offer better durability and reduced friction for GY6 125/150cc + engines. The forged piston will offer better power and the ceramic cylinder with more heat dissipation will help to avoid overheating. The ceramic ..
$752.61
Brand: Taida Model: GY6-090-4V54-180
Description: High-Quality Taida Ceramic Cylinder 63mm 180cc with Forged Aluminum Piston offer better durability and reduced friction for GY6 125/150cc + engines. The forged piston will offer better power and the ceramic cylinder with more heat dissipation will help to avoid overheating. The ceramic ..
$816.00
Taida Big Bore Combo 63mm 205cc C 2V w/HC Forge Piston Fit 54mm (GY6) Taida Big Bore Combo 63mm 205cc C 2V w/HC Forge Piston Fit 54mm (GY6)
10 - 14 Days
Brand: Taida Model: GY6-090-2V54-205
Description: High-Quality Taida Ceramic Cylinder 63mm 205cc with High-Compression Forged Piston offer better durability, power, and reduced friction for GY6 125/150cc + engines. The high compression forged piston will offer better power and the ceramic cylinder with more heat dissipation will help t..
$978.51
Taida Big Bore Combo 63mm 205cc LC 2V w/Cast Piston Fit 54mm (GY6) Taida Big Bore Combo 63mm 205cc LC 2V w/Cast Piston Fit 54mm (GY6)
10 - 14 Days
Brand: Taida Model: GY6-090-2V54-205-LC
Description: High-Quality Liquid Cooled Taida Cast-Iron Cylinder 63mm 205cc with Cast Aluminum Piston for GY6 125/150cc + engines. The cylinder bore is 63mm. Taida Big Bore Combo 63mm 205cc Liquid-Cool 2V w/Cast Piston Fit 54mm including the following parts Taida 63mm (205cc) cylinder kit Liquid Coo..
$887.00
Brand: Taida Model: GY6-090-2V57-232
Description: High-Quality Taida Ceramic Cylinder 67mm 232cc with Forged Aluminum Piston offer better durability and reduced friction for GY6 125/150cc + engines. The forged piston will offer better power and the ceramic cylinder with more heat dissipation will help to avoid overheating. The ceramic ..
$998.94
Taida Big Bore Combo 67mm 232cc C 4V w/Forged Piston Fit 57mm (GY6) Taida Big Bore Combo 67mm 232cc C 4V w/Forged Piston Fit 57mm (GY6)
10 - 14 Days
Brand: Taida Model: GY6-090-4V57-232-4V
Description: High-Quality Taida Ceramic Cylinder 67mm 232cc with Forged Aluminum Piston offer better durability and reduced friction for GY6 125/150cc + engines. The forged piston will offer better power and the ceramic cylinder with more heat dissipation will help to avoid overheating. The ceramic ..
$1,075.00
Brand: Taida Model: GY6-090-2V57-232-LC
Description: High-Quality Liquid Cooled Taida Ceramic Cylinder 67mm 232cc with Forged Aluminum Piston offer better durability and reduced friction for GY6 125/150cc + engines. The forged piston will offer better power and the ceramic cylinder with more heat dissipation will help to avoid overheating..
$1,061.54
Taida Big Bore Combo 67mm 232cc LCC 4V w/Forged Piston Fit 57mm (GY6) Taida Big Bore Combo 67mm 232cc LCC 4V w/Forged Piston Fit 57mm (GY6)
10 - 14 Days
Brand: Taida Model: GY6-090-4V57-232-LC-4V
Description: High-Quality Liquid Cooled Taida Ceramic Cylinder 67mm 232cc with 4-Valves Forged Piston offer better durability and reduced friction for 57mm B-Block GY6 engines. The ceramic cylinder coating offers better durability with more heat dissipation and can stand higher temperature. The cyli..
$1,333.00
Brand: Taida Model: DIO50-030
Description: High-Quality Taida Crankshaft 41.4 standard stroker for Honda Dio (AF16-AF18E) engines. Crankshaft assembly replacement for Honda Dio. We recommend this crankshaft with the Taida Cylinder 50mm 81cc Big Bore Kit Part #DIO-01050-A.NOTE: THIS IS NOT FOR EARLY MODEL (PRE-1994) AF05E Engines..
$66.95
Taida Crankshaft 49.6mm Stroker (Honda Dio)
10 - 14 Days
Brand: Taida Model: DIO90-030
Description: High-Quality Taida Crankshaft 49.6 for Honda Dio (AF16-AF18E) engines. We recommend this crankshaft with the Taida Cylinder 50mm 97cc Big Bore Kit Part # DIO-01050-B.NOTE: THIS IS NOT FOR EARLY MODEL (PRE-1994) AF05E Engines.Boring and machining may require.Specifications:• &n..
$98.00
Brand: Taida Model: DIO90-030200
Description: High-Quality Taida Crankshaft 51.6 for Honda Dio (AF16-AF18E) engines. This crankshaft allows you to go up to 111cc with Taida Cylinder 52.5mm Big Bore Kit Part #DIO-01052-B.NOTE: THIS IS NOT FOR EARLY MODEL (PRE-1994) AF05E Engines.Boring and machining may require.Specifications:• ..
$132.86
Taida Crankshaft 52.6mm 3000 Stroker (Honda Dio)
10 - 14 Days
Brand: Taida Model: DIO90-030300
Description: High-Quality Taida Crankshaft 52.6 for Honda Dio (AF16-AF18E) engines. This crankshaft allows you to go up to 130cc with Taida Cylinder 56mm Big Bore Kits (Part #DIO-01056).NOTE: THIS IS NOT FOR EARLY MODEL (PRE-1994) AF05E Engines.Boring and machining may require.Specifications:• ..
$148.00
Brand: Taida Model: GY6-030
Description: High-Quality Taida Crankshaft 57.8mm Standard Stroker assembly for 125cc and 150cc GY6 4-stroke 152QMI / 157QMJ engines. Taida Crankshaft 57.8mm allow using performance cylinder kit from 150 to 180cc without any issue.Specifications: Includes the following Crankshaft stroker, Woodruff k..
$148.00
Brand: Taida Model: GY6-030820-NON
Description: High-Quality Taida Crankshaft 66mm (2V or 4V) 8200 Stroker extends the GY6 standard 57.8mm stroke to 66mm adding an 8.2mm longer stroke. In combination with the Taida Cylinder 63mm Big Bore, it will produce a 205cc cylinder displacement or with Taida Cylinder 67mm Big Bore will produce ..
$342.38
Brand: Taida Model: GY6-030820
Description: High-Quality Taida Crankshaft 66mm 4V 8200 Stroker extends the GY6 standard 57.8mm stroke to 66mm adding an 8.2mm longer stroke. In combination with the Taida Cylinder 63mm Big Bore, it will produce a 205cc cylinder displacement or with Taida Cylinder 67mm Big Bore will produce a 2..
$352.83
Brand: Taida Model: DIO-BSPG
Description: Taida Crankshaft bearing and oil seal set for Honda Dio with AF16 engine. The set includes two bearing set and two oil seal set. A set-mix for each side of the crankshaft (flywheel and variator).NOTE: THIS IS NOT FOR EARLY MODEL (PRE-1994) AF05E Engines.Specifications:Includes the follo..
$39.95
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