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Top End & Piston HYPERDRYVE 101.99/+0.02 Yamaha YXM700 Viking YFM700G Grizzly Fi 4WD [IRS] YFM700R Raptor 2014-2018
Top End & Piston HYPERDRYVE 101.98/+0.01 Yamaha YXM700 Viking YFM700G Grizzly Fi 4WD [IRS] YFM700R Raptor 2014-2018
Top End & Piston HYPERDRYVE 101.97/STD Yamaha YXM700 Viking YFM700G Grizzly Fi 4WD [IRS] YFM700R Raptor 2014-2018
Top End & Piston 101.99/+0.02 9.2:1 Yamaha YFM700G Grizzly Fi 4WD [IRS] YFM700R Raptor YXR700F Rhino 700 2006-2016
Top End & Piston 101.98/+0.01 9.2:1 Yamaha YFM700G Grizzly Fi 4WD [IRS] YFM700R Raptor YXR700F Rhino 700 2006-2016
Top End & Piston 85.45/+1.00 11:1 Yamaha YFM450FGP Grizzly 4WD EPS [IRS] YXR450F Rhino 450 YFM450FG Grizzly 4WD [IRS] YFM450FA Kodiak 4WD [IRS] YFM450FX Wolverine 4WD [SRA] 2003-2014
Top End & Piston 84.95/+0.50 11:1 Yamaha YFM450FGP Grizzly 4WD EPS [IRS] YXR450F Rhino 450 YFM450FG Grizzly 4WD [IRS] YFM450FA Kodiak 4WD [IRS] YFM450FX Wolverine 4WD [SRA] 2003-2014
Top End & Piston 84.45/STD 11:1 Yamaha YFM450FGP Grizzly 4WD EPS [IRS] YXR450F Rhino 450 YFM450FG Grizzly 4WD [IRS] YFM450FA Kodiak 4WD [IRS] YFM450FX Wolverine 4WD [SRA] 2003-2014
Top End & Piston 101.47/+1.50 11:1 Yamaha YFM660FG Grizzly 4WD [IRS] YXR660F Rhino 660 2002-2008
Top End & Piston 100.97/+1.00 11:1 Yamaha YFM660FG Grizzly 4WD [IRS] YXR660F Rhino 660 2002-2008
Top End & Piston 100.47/+0.50 11:1 Yamaha YFM660FG Grizzly 4WD [IRS] YXR660F Rhino 660 2002-2008
PISTON RINGS 94.95MM GAS/ FOR NAMURA PISTONS ONLY Gas-Gas Yamaha EC 450F YZ450F WR450F 2003-2015
Top End & Piston HYPERDRYVE 94.95/STD 11.4:1 Yamaha YFZ450 2004-2013
Top End & Piston NON HYPERDRYVE 94.97/+0.02 11.4:1 Yamaha YFZ450 2004-2013
Top End & Piston HYPERDRYVE 94.96/+0.01 11.4:1 Yamaha YFZ450 2004-2013
Top End & Piston 85.42/+1.00 11:1 Yamaha YFM400FG Grizzly 4WD [IRS] YFM400FA Kodiak 4WD [SRA] YFM400A Kodiak 2WD [SRA] 2000-2008
Top End & Piston 84.92/+0.50 11:1 Yamaha YFM400FG Grizzly 4WD [IRS] YFM400FA Kodiak 4WD [SRA] YFM400A Kodiak 2WD [SRA] 2000-2008
Top End & Piston 84.42/STD 11:1 Yamaha YFM400FG Grizzly 4WD [IRS] YFM400FA Kodiak 4WD [SRA] YFM400A Kodiak 2WD [SRA] 2000-2008
PISTON RINGS 95MM FOR NAMURA PISTONS ONLY Yamaha XT600 TT600 1984-1995
PISTON RINGS 96MM FOR NAMURA PISTONS ONLY Yamaha XT600 TT600 1984-1995
Top End & Piston 96/+1.00 11:1 Yamaha XT600 YFM600FG Grizzly 4WD [SRA] 1984-2001
PISTON RINGS 95.5MM FOR NAMURA PISTONS ONLY Yamaha XT600 TT600 1984-1995
Top End & Piston 95.5/+0.50 11:1 Yamaha XT600 YFM600FG Grizzly 4WD [SRA] 1984-2001
Top End & Piston 95/STD 11:1 Yamaha XT600 YFM600FG Grizzly 4WD [SRA] 1984-2001
Top End & Piston 84/+1.00 11:1 Yamaha YFM400FB Big Bear 4WD [SRA] YFM400FA Kodiak 4WD [SRA] YFM400 Big Bear 2WD [SRA] YFM400FBI Big Bear 4WD [IRS] 1993-2010
Top End & Piston 83.5/+0.50 11:1 Yamaha YFM400FB Big Bear 4WD [SRA] YFM400FA Kodiak 4WD [SRA] YFM400 Big Bear 2WD [SRA] YFM400FBI Big Bear 4WD [IRS] 1993-2010
TOP END REPAIR KIT Yamaha YFM400FB Big Bear 4WD [SRA] YFM400FA Kodiak 4WD [SRA] YFM400 Big Bear 2WD [SRA] YFM400FBI Big Bear 4WD [IRS] 1993-2010
Top End & Piston 83/STD 11:1 Yamaha YFM400FB Big Bear 4WD [SRA] YFM400FA Kodiak 4WD [SRA] YFM400 Big Bear 2WD [SRA] YFM400FBI Big Bear 4WD [IRS] 1993-2010
PISTON RINGS 82.95MM FOR NAMURA PISTONS ONLY Yamaha Bw350 1987-1988
Top End & Piston 84.45/+1.50 11:1 Yamaha YFM350X Wolverine 2WD [SRA] YFM350FG Grizzly 4WD [SRA] YFM350G Grizzly 2WD [SRA] YFM350BA Bruin 2WD [SRA] YFM350FA Bruin 4WD [SRA] YFM350FX Wolverine 4WD [SRA] YFM350FGI Grizzly 4WD [IRS] YFM350X Warrior YFM350FW Big Bear 4WD [SRA] YFM350R Raptor YFM350U Big Bear 2WD [SRA] YFM350ER Moto-4 1987-2014
PISTON RINGS 83.95MM FOR NAMURA PISTONS ONLY Yamaha Bw350 1987-1988
Top End & Piston 83.95/+1.00 11:1 Yamaha YFM350X Wolverine 2WD [SRA] YFM350FG Grizzly 4WD [SRA] YFM350G Grizzly 2WD [SRA] YFM350BA Bruin 2WD [SRA] YFM350FA Bruin 4WD [SRA] YFM350FX Wolverine 4WD [SRA] YFM350FGI Grizzly 4WD [IRS] YFM350X Warrior YFM350FW Big Bear 4WD [SRA] YFM350R Raptor YFM350U Big Bear 2WD [SRA] YFM350ER Moto-4 1987-2014
PISTON RINGS 83.45MM FOR NAMURA PISTONS ONLY Yamaha Bw350 1987-1988
Top End & Piston 83.45/+0.50 11:1 Yamaha YFM350X Wolverine 2WD [SRA] YFM350FG Grizzly 4WD [SRA] YFM350G Grizzly 2WD [SRA] YFM350BA Bruin 2WD [SRA] YFM350FA Bruin 4WD [SRA] YFM350FX Wolverine 4WD [SRA] YFM350FGI Grizzly 4WD [IRS] YFM350X Warrior YFM350FW Big Bear 4WD [SRA] YFM350R Raptor YFM350U Big Bear 2WD [SRA] YFM350ER Moto-4 1987-2014
Top End & Piston 82.95/STD 11:1 Yamaha YFM350X Wolverine 2WD [SRA] YFM350FG Grizzly 4WD [SRA] YFM350G Grizzly 2WD [SRA] YFM350BA Bruin 2WD [SRA] YFM350FA Bruin 4WD [SRA] YFM350FX Wolverine 4WD [SRA] YFM350FGI Grizzly 4WD [IRS] YFM350X Warrior YFM350FW Big Bear 4WD [SRA] YFM350R Raptor YFM350U Big Bear 2WD [SRA] YFM350ER Moto-4 1987-2014
Top End & Piston 101.47/+1.50 11:1 Yamaha YFM660R Raptor 2001-2005
Top End & Piston 100.97/+1.00 11:1 Yamaha YFM660R Raptor 2001-2005
Top End & Piston 100.47/+0.50 11:1 Yamaha YFM660R Raptor 2001-2005
Top End & Piston 99.97/STD 11:1 Yamaha YFM660R Raptor 2001-2005
Top End & Piston 67.92/+2.00 6.6:1 Yamaha YFS200 Blaster 1988-2006
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STICKER![Top End & Piston HYPERDRYVE 101.99/+0.02 Yamaha YXM700 Viking YFM700G Grizzly Fi 4WD [IRS] YFM700R Raptor 2014-2018](https://motomacia.com/wp-content/uploads/2025/03/namura_top_end_kit_hyperdryve_10199__002_yam_186_4013c_1-1-500x500.jpg)
![Top End & Piston HYPERDRYVE 101.98/+0.01 Yamaha YXM700 Viking YFM700G Grizzly Fi 4WD [IRS] YFM700R Raptor 2014-2018](https://motomacia.com/wp-content/uploads/2025/03/namura_top_end_kit_hyperdryve_10198__001_yam_186_4013b_1-1-500x500.jpg)
![Top End & Piston HYPERDRYVE 101.97/STD Yamaha YXM700 Viking YFM700G Grizzly Fi 4WD [IRS] YFM700R Raptor 2014-2018](https://motomacia.com/wp-content/uploads/2025/03/namura_top_end_kit_hyperdryve_10197_std_yam_186_4013_1-1-500x500.jpg)
![Top End & Piston 101.99/+0.02 9.2:1 Yamaha YFM700G Grizzly Fi 4WD [IRS] YFM700R Raptor YXR700F Rhino 700 2006-2016](https://motomacia.com/wp-content/uploads/2025/03/namura_top_end_kit_10199__002_92_1_yam_186_4012c_1-1-500x500.jpg)
![Top End & Piston 101.98/+0.01 9.2:1 Yamaha YFM700G Grizzly Fi 4WD [IRS] YFM700R Raptor YXR700F Rhino 700 2006-2016](https://motomacia.com/wp-content/uploads/2025/03/namura_top_end_kit_10198__001_92_1_yam_186_4012b_1-1-500x500.jpg)
![Top End & Piston 85.45/+1.00 11:1 Yamaha YFM450FGP Grizzly 4WD EPS [IRS] YXR450F Rhino 450 YFM450FG Grizzly 4WD [IRS] YFM450FA Kodiak 4WD [IRS] YFM450FX Wolverine 4WD [SRA] 2003-2014](https://motomacia.com/wp-content/uploads/2025/03/namura_top_end_kit_8545__100_11_1_yam_186_40114_1-1-500x500.jpg)
![Top End & Piston 84.95/+0.50 11:1 Yamaha YFM450FGP Grizzly 4WD EPS [IRS] YXR450F Rhino 450 YFM450FG Grizzly 4WD [IRS] YFM450FA Kodiak 4WD [IRS] YFM450FX Wolverine 4WD [SRA] 2003-2014](https://motomacia.com/wp-content/uploads/2025/03/namura_top_end_kit_8495__050_11_1_yam_186_40112_1-1-500x500.jpg)
![Top End & Piston 84.45/STD 11:1 Yamaha YFM450FGP Grizzly 4WD EPS [IRS] YXR450F Rhino 450 YFM450FG Grizzly 4WD [IRS] YFM450FA Kodiak 4WD [IRS] YFM450FX Wolverine 4WD [SRA] 2003-2014](https://motomacia.com/wp-content/uploads/2025/03/namura_top_end_kit_8445_std_11_1_yam_186_4011_1-1-500x500.jpg)
![Top End & Piston 101.47/+1.50 11:1 Yamaha YFM660FG Grizzly 4WD [IRS] YXR660F Rhino 660 2002-2008](https://motomacia.com/wp-content/uploads/2025/03/namura_top_end_kit_10147__150_11_1_yam_186_40106_1-1-500x500.jpg)
![Top End & Piston 100.97/+1.00 11:1 Yamaha YFM660FG Grizzly 4WD [IRS] YXR660F Rhino 660 2002-2008](https://motomacia.com/wp-content/uploads/2025/03/namura_top_end_kit_10097__100_11_1_yam_186_40104_1-1-500x500.jpg)
![Top End & Piston 100.47/+0.50 11:1 Yamaha YFM660FG Grizzly 4WD [IRS] YXR660F Rhino 660 2002-2008](https://motomacia.com/wp-content/uploads/2025/03/namura_top_end_kit_10047__050_11_1_yam_186_40102_1-1-500x500.jpg)
![Top End & Piston 85.42/+1.00 11:1 Yamaha YFM400FG Grizzly 4WD [IRS] YFM400FA Kodiak 4WD [SRA] YFM400A Kodiak 2WD [SRA] 2000-2008](https://motomacia.com/wp-content/uploads/2025/03/namura_top_end_kit_8542__100_11_1_yam_186_40084_1-1-500x500.jpg)
![Top End & Piston 84.92/+0.50 11:1 Yamaha YFM400FG Grizzly 4WD [IRS] YFM400FA Kodiak 4WD [SRA] YFM400A Kodiak 2WD [SRA] 2000-2008](https://motomacia.com/wp-content/uploads/2025/03/namura_top_end_kit_8492__050_11_1_yam_186_40082_1-1-500x500.jpg)
![Top End & Piston 84.42/STD 11:1 Yamaha YFM400FG Grizzly 4WD [IRS] YFM400FA Kodiak 4WD [SRA] YFM400A Kodiak 2WD [SRA] 2000-2008](https://motomacia.com/wp-content/uploads/2025/03/namura_top_end_kit_8442_std_11_1_yam_186_4008_1-1-500x500.jpg)
![Top End & Piston 96/+1.00 11:1 Yamaha XT600 YFM600FG Grizzly 4WD [SRA] 1984-2001](https://motomacia.com/wp-content/uploads/2025/03/namura_top_end_kit_96__100_11_1_yam_186_40074_1-1-500x500.jpg)
![Top End & Piston 95.5/+0.50 11:1 Yamaha XT600 YFM600FG Grizzly 4WD [SRA] 1984-2001](https://motomacia.com/wp-content/uploads/2025/03/namura_top_end_kit_955__050_11_1_yam_186_40072_1-1-500x500.jpg)
![Top End & Piston 95/STD 11:1 Yamaha XT600 YFM600FG Grizzly 4WD [SRA] 1984-2001](https://motomacia.com/wp-content/uploads/2025/03/namura_top_end_kit_95_std_11_1_yam_186_4007_1-1-500x500.jpg)
![Top End & Piston 84/+1.00 11:1 Yamaha YFM400FB Big Bear 4WD [SRA] YFM400FA Kodiak 4WD [SRA] YFM400 Big Bear 2WD [SRA] YFM400FBI Big Bear 4WD [IRS] 1993-2010](https://motomacia.com/wp-content/uploads/2025/03/namura_top_end_kit_84__100_11_1_yam_186_40064_1-1-500x500.jpg)
![Top End & Piston 83.5/+0.50 11:1 Yamaha YFM400FB Big Bear 4WD [SRA] YFM400FA Kodiak 4WD [SRA] YFM400 Big Bear 2WD [SRA] YFM400FBI Big Bear 4WD [IRS] 1993-2010](https://motomacia.com/wp-content/uploads/2025/03/namura_top_end_kit_835__050_11_1_yam_186_40062_1-1-500x500.jpg)
![TOP END REPAIR KIT Yamaha YFM400FB Big Bear 4WD [SRA] YFM400FA Kodiak 4WD [SRA] YFM400 Big Bear 2WD [SRA] YFM400FBI Big Bear 4WD [IRS] 1993-2010](https://motomacia.com/wp-content/uploads/2025/03/namura_top_end_repair_kit_186_40061_1-1-500x500.jpg)
![Top End & Piston 83/STD 11:1 Yamaha YFM400FB Big Bear 4WD [SRA] YFM400FA Kodiak 4WD [SRA] YFM400 Big Bear 2WD [SRA] YFM400FBI Big Bear 4WD [IRS] 1993-2010](https://motomacia.com/wp-content/uploads/2025/03/namura_top_end_kit_83_std_11_1_yam_186_4006_1-1-500x500.jpg)
![Top End & Piston 84.45/+1.50 11:1 Yamaha YFM350X Wolverine 2WD [SRA] YFM350FG Grizzly 4WD [SRA] YFM350G Grizzly 2WD [SRA] YFM350BA Bruin 2WD [SRA] YFM350FA Bruin 4WD [SRA] YFM350FX Wolverine 4WD [SRA] YFM350FGI Grizzly 4WD [IRS] YFM350X Warrior YFM350FW Big Bear 4WD [SRA] YFM350R Raptor YFM350U Big Bear 2WD [SRA] YFM350ER Moto-4 1987-2014](https://motomacia.com/wp-content/uploads/2025/03/namura_top_end_kit_8445__150_11_1_yam_186_40056_1-1-500x500.jpg)
![Top End & Piston 83.95/+1.00 11:1 Yamaha YFM350X Wolverine 2WD [SRA] YFM350FG Grizzly 4WD [SRA] YFM350G Grizzly 2WD [SRA] YFM350BA Bruin 2WD [SRA] YFM350FA Bruin 4WD [SRA] YFM350FX Wolverine 4WD [SRA] YFM350FGI Grizzly 4WD [IRS] YFM350X Warrior YFM350FW Big Bear 4WD [SRA] YFM350R Raptor YFM350U Big Bear 2WD [SRA] YFM350ER Moto-4 1987-2014](https://motomacia.com/wp-content/uploads/2025/03/namura_top_end_kit_8395__100_11_1_yam_186_40054_1-1-500x500.jpg)
![Top End & Piston 83.45/+0.50 11:1 Yamaha YFM350X Wolverine 2WD [SRA] YFM350FG Grizzly 4WD [SRA] YFM350G Grizzly 2WD [SRA] YFM350BA Bruin 2WD [SRA] YFM350FA Bruin 4WD [SRA] YFM350FX Wolverine 4WD [SRA] YFM350FGI Grizzly 4WD [IRS] YFM350X Warrior YFM350FW Big Bear 4WD [SRA] YFM350R Raptor YFM350U Big Bear 2WD [SRA] YFM350ER Moto-4 1987-2014](https://motomacia.com/wp-content/uploads/2025/03/namura_top_end_kit_8345__050_11_1_yam_186_40052_1-1-500x500.jpg)
![Top End & Piston 82.95/STD 11:1 Yamaha YFM350X Wolverine 2WD [SRA] YFM350FG Grizzly 4WD [SRA] YFM350G Grizzly 2WD [SRA] YFM350BA Bruin 2WD [SRA] YFM350FA Bruin 4WD [SRA] YFM350FX Wolverine 4WD [SRA] YFM350FGI Grizzly 4WD [IRS] YFM350X Warrior YFM350FW Big Bear 4WD [SRA] YFM350R Raptor YFM350U Big Bear 2WD [SRA] YFM350ER Moto-4 1987-2014](https://motomacia.com/wp-content/uploads/2025/03/namura_top_end_kit_8295_std_11_1_yam_186_4005_1-1-500x500.jpg)
