Sold individually — price is for one (1) tire. The Pirelli MT 21™ Rallycross is a front MX tire in size 90/90-21, 54R load/speed index.

Key Features

• Provides excellent off-road performance, even over long distances
• Top-selling dual-sport tire in the U.S.A
• Designed mainly for off-road use
• Dual-sport 90% Off 10% On

Specifications

• Brand: Pirelli
• Model: MT 21™ Rallycross
• Part Number: 3990400
• SKU: 0316-0497
• Position: Front
• Size: 90/90-21
• Load/Speed Index: 54R
• Construction: Bias (Tube Type)
• Sidewall: Blackwall
• Rim Diameter: 21"
• Width: 90
• Market Segment: Dual Sport
• Weight: 8.5 lb
• Quantity: Each

Fitment by Brand

Aprilia

• 2018 RX 125 — Front only (Factory pressure: 1.90 bar (28 psi); rim width: 2.15)
• 2006 RXV / MXV 450 — Front only (rim width: 2.15)
• 2006 RXV 550 — Front only (rim width: 2.15)
• 1998 ETX 125 — Front only (Factory pressure: 1.70 bar (25 psi); rim width: 2.15)

BMW

• 2008 G450X — Front only (Factory pressure: 1.20 bar (17 psi); rim width: 2.15)
• 2006 G 650 Xchallenge — Front only (Factory pressure: 1.90 bar (28 psi); rim width: 2.15)
• 2006 G 650 Xchallenge (without ABS) — Front only (Factory pressure: 1.90 bar (28 psi); rim width: 2.15)
• 1984 R80G/S — Front only (Factory pressure: 2.20 bar (32 psi); rim width: 2.15)

Beta

• 2021 RR 4T 125 LC Enduro — Front only (rim width: 2.15)
• 2007, 2020 Alp 200 — Front only (Factory pressure: 1.00 bar (15 psi); rim width: 2.15; Factory pressure: 2.30 bar (33 psi); rim width: 2.15)
• 2018 X-Trainer 250 — Front only (Factory pressure: 1.50 bar (22 psi); rim width: 2.15)
• 2015 250 RR 2T — Front only (Factory pressure: 1.50 bar (22 psi); rim width: 2.15)
• 2015 300 RR 2T — Front only (Factory pressure: 1.50 bar (22 psi); rim width: 2.15)
• 2015 RR Enduro 350 4T — Front only (Factory pressure: 1.50 bar (22 psi); rim width: 2.15)
• 2015 RR Enduro 350 4T EFI Racing — Front only (Factory pressure: 1.50 bar (22 psi); rim width: 2.15)
• 2015 RR Enduro 390 4T — Front only (Factory pressure: 1.50 bar (22 psi); rim width: 2.15)
• 2015 RR Enduro 430 4T — Front only (Factory pressure: 1.50 bar (22 psi); rim width: 2.15)
• 2015 RR Enduro 480 4T — Front only (Factory pressure: 1.50 bar (22 psi); rim width: 2.15)
• 2015 X-Trainer 300 — Front only (Factory pressure: 1.50 bar (22 psi); rim width: 2.15)
• 2006 125 RR Enduro — Front only (rim width: 2.15)
• 2005 RR Enduro 4T 250 — Front only (rim width: 2.15)
• 2005 RR Enduro 4T 400 — Front only (rim width: 2.15)
• 2005 RR Enduro 4T 450 — Front only (rim width: 2.15)
• 2005 RR Enduro 4T 525 — Front only (rim width: 2.15)

Cagiva

• 1992 W 8 — Front only (Factory pressure: 1.50 bar (22 psi); rim width: 2.15)

Gas Gas

• 2022 ES 700 — Front only (Factory pressure: 1.80 bar (26 psi); rim width: 2.15)
• 2019 EC Ranger 200 — Front only (rim width: 2.15)
• 2019 EC Ranger 300 — Front only (rim width: 2.15)
• 2013 EC 250F — Front only (rim width: 2.15)
• 2013 EC 300F — Front only (rim width: 2.15)
• 2006 Endurocross FSE 450 — Front only (rim width: 2.15)
• 2006 Endurocross FSE 500 — Front only (rim width: 2.15)
• 2005 Enducross EC 125 — Front only (rim width: 2.15)
• 2005 Enducross EC 200 — Front only (rim width: 2.15)
• 2005 Enducross EC 250 — Front only (rim width: 2.15)
• 2005 Enducross EC 300 — Front only (rim width: 2.15)

Honda

• 2019 CRF450L — Front only (Factory pressure: 1.50 bar (22 psi); rim width: 2.15)
• 2017 CRF 250 LA — Front only (Factory pressure: 1.50 bar (22 psi); rim width: 2.15)
• 2017 CRF 250 RA — Front only (Factory pressure: 1.50 bar (22 psi); rim width: 2.15)
• 2012 CRF250L — Front only (Factory pressure: 1.50 bar (22 psi); rim width: 2.15)
• 2000 XL650V Transalp — Front only (Factory pressure: 2.00 bar (29 psi); rim width: 2.15)
• 1987, 1997 XL600V Transalp — Front only (Factory pressure: 2.00 bar (29 psi); rim width: 2.15)
• 1996 XR400R — Front only (rim width: 2.15)
• 1995 CRM 125 R — Front only (rim width: 2.15)

Husaberg

• 2011 TE300 — Front only (rim width: 2.15)
• 2008 FE 450 e/6; 570 — Front only (rim width: 2.15)
• 2008 FE 550 e/6; FE 650 e/6 — Front only (rim width: 2.15)
• 2008 FE390 — Front only (Factory pressure: 1.50 bar (22 psi); rim width: 2.15)
• 2008 TE 390 — Front only (Factory pressure: 1.50 bar (22 psi); rim width: 2.15)

Husqvarna

• 2020 701 Enduro LR — Front only (Factory pressure: 2.00 bar (29 psi); rim width: 2.15)
• 2018 TE 250 i (inject.) — Front only (rim width: 2.15)
• 2018 TE 300 i (inject.) — Front only (Factory pressure: 1.00 bar (15 psi); rim width: 2.15)
• 2016 701 Enduro — Front only (Factory pressure: 2.00 bar (29 psi); rim width: 2.15)
• 2015 FE 250 — Front only (Factory pressure: 1.00 bar (15 psi); rim width: 2.15)
• 2015 FE 350 — Front only (Factory pressure: 1.00 bar (15 psi); rim width: 2.15)
• 2015 FE501 — Front only (Factory pressure: 1.00 bar (15 psi); rim width: 2.15)
• 2002, 2015 TE 250 — Front only (Factory pressure: 1.00 bar (15 psi); rim width: 2.15)
• 2015 TE 300 — Front only (Factory pressure: 1.00 bar (15 psi); rim width: 2.15)
• 2015 TX 125 — Front only (Factory pressure: 1.00 bar (15 psi); rim width: 2.15)
• 2014 FE 450 — Front only (Factory pressure: 1.00 bar (15 psi); rim width: 2.15)
• 2013 TR 650 Terra without ABS, 18" rear rim — Front only (Factory pressure: 2.00 bar (29 psi); rim width: 2.15)
• 2011 TE125 — Front only (rim width: 2.15)
• 2004 WRE 125 — Front only (Factory pressure: 1.50 bar (22 psi); rim width: 2.15)
• 2002 TE310 — Front only (Factory pressure: 1.00 bar (15 psi); rim width: 2.15)
• 2001 TE 630; 570; 510; 450 — Front only (rim width: 2.15)
• 1999 WRE 610 — Front only (rim width: 2.15)

KTM

• 2014, 2022 Freeride E-XC — Front only (Factory pressure: 1.00 bar (15 psi); rim width: 2.15; Factory pressure: 1.50 bar (22 psi); rim width: 2.15)
• 2019 450 Rally Replica — Front only (Factory pressure: 1.50 bar (22 psi); rim width: 2.15)
• 2019 690 Enduro R — Front only (Factory pressure: 1.80 bar (26 psi); rim width: 2.15)
• 2017 Freeride — Front only (rim width: 2.15)
• 2016 250;350;450;500 EXC-F;Six Days — Front only (Factory pressure: 2.00 bar (29 psi); rim width: 2.15)
• 2015 500 EXC — Front only (Factory pressure: 1.50 bar (22 psi); rim width: 2.15)
• 2014 Freeride 250 R — Front only (Factory pressure: 1.50 bar (22 psi); rim width: 2.15)
• 2012 350 EXC-F — Front only (rim width: 2.15)
• 2012 350 Freeride — Front only (Factory pressure: 1.50 bar (22 psi); rim width: 2.15)
• 2012 EXC-F Six Days — Front only (rim width: 2.15)
• 2008 250 EXC-F Six Days — Front only (rim width: 2.15)
• 2008 300 EXC-E; Six Days — Front only (rim width: 2.15)
• 2008 450 EXC-R; Six Days — Front only (rim width: 2.15)
• 2008 500; 530 EXC-R; Six Days — Front only (rim width: 2.15)
• 2008 690 Enduro; R; — Front only (Factory pressure: 2.00 bar (29 psi); rim width: 2.15)
• 2006 950 Super Enduro R — Front only (Factory pressure: 2.40 bar (35 psi); rim width: 2.15)
• 2005 525 EXC — Front only (Factory pressure: 1.50 bar (22 psi); rim width: 2.15)
• 2003 450 EXC Racing — Front only (rim width: 2.15)
• 2003 625 SXC — Front only (Factory pressure: 2.00 bar (29 psi); rim width: 2.15)
• 2002 200 EXC, GS — Front only (rim width: 2.15)
• 2002 250 EXC Racing — Front only (rim width: 2.15)
• 2002 250 EXC Six Days — Front only (rim width: 2.15)
• 2002 300 EXC — Front only (Factory pressure: 1.00 bar (15 psi); rim width: 2.15)
• 2002 400 EXC Racing — Front only (rim width: 2.15)
• 2002 520 EXC Racing — Front only (rim width: 2.15)
• 2002 LC4 625 Supercompetition — Front only (rim width: 2.15)
• 2000 520 EXC-E — Front only (rim width: 2.15)
• 2000 LC4 400 EXC-E — Front only (Factory pressure: 1.70 bar (25 psi); rim width: 2.15)
• 2000 LC4 620 Supercompetition — Front only (Factory pressure: 1.70 bar (25 psi); rim width: 2.15)
• 1999 LC4-E 640 Enduro; Sixdays — Front only (Factory pressure: 1.70 bar (25 psi); rim width: 2.15)
• 1998 620 LC4 Adventure — Front only (Factory pressure: 1.70 bar (25 psi); rim width: 2.15)
• 1998 640 LC4 Adventure — Front only (Factory pressure: 1.70 bar (25 psi); rim width: 2.15)

Kawasaki

• 1995, 1999 KLR650 — Front only (Factory pressure: 1.50 bar (22 psi); rim width: 2.15)
• 1998 KLX650R — Front only (rim width: 2.15)

MZ

• 2001 125 — Front only (Factory pressure: 1.85 bar (27 psi); rim width: 2.15)
• 1998 Baghira; — Front only (Factory pressure: 1.80 bar (26 psi); rim width: 2.15)

Maico

• 1999 500 Enduro — Front only (rim width: 2.15)
• 1999 Enduro 250 — Front only (rim width: 2.15)

Malaguti

• 2019 XTM 125 — Front only (rim width: 2.15)
• 2008 X3M Enduro — Front only (rim width: 2.15)

Peugeot

• 2005 XPS Enduro — Front only (Factory pressure: 1.90 bar (28 psi); rim width: 2.15)

Royal Enfield

• 2018 Himalayan; Sleet — Front only (Factory pressure: 1.90 bar (28 psi); rim width: 2.15)

SWM

• 2018 SuperDual X — Front only (Factory pressure: 2.50 bar (36 psi); rim width: 2.15)
• 2016 RS 125 R — Front only (Factory pressure: 1.50 bar (22 psi); rim width: 2.15)
• 2016 RS 300 R — Front only (rim width: 2.15)
• 2016 RS 500 R — Front only (rim width: 2.15)
• 2016 RS 650 R — Front only (Factory pressure: 1.50 bar (22 psi); rim width: 2.15)

Sherco

• 2015 250 SE-R (2T) — Front only (rim width: 2.15)
• 2015 250 SEF-R (4T) — Front only (rim width: 2.15)
• 2015 300 SE-R (2T) — Front only (rim width: 2.15)
• 2015 300 SEF-R (4T) — Front only (rim width: 2.15)
• 2015 450 SEF-R (4T) — Front only (rim width: 2.15)

Suzuki

• 2000 DR-Z 400; DR-Z 400 E — Front only (Factory pressure: 1.00 bar (15 psi); rim width: 2.15)
• 1980 SP400 T — Front only (rim width: 2.15)

Vor

• 1999 492 ED — Front only (rim width: 2.15)

Yamaha

• 2003, 2006, 2012, 2016 WR450F — Front only (Factory pressure: 1.50 bar (22 psi); rim width: 2.15; Factory pressure: 2.10 bar (30 psi); rim width: 2.15)
• 2001, 2006 WR250F — Front only (Factory pressure: 2.10 bar (30 psi); rim width: 2.15)
• 2005 XT 125 R — Front only (Factory pressure: 2.30 bar (33 psi); rim width: 2.15)
• 2001 WR426F — Front only (Factory pressure: 2.10 bar (30 psi); rim width: 2.15)
• 1998 TT 600 R; RE — Front only (Factory pressure: 2.20 bar (32 psi); rim width: 2.15)
• 1993 TT 600 E; F — Front only (Factory pressure: 1.80 bar (26 psi); rim width: 2.15)
• 1991 XT 600 E/K — Front only (Factory pressure: 1.50 bar (22 psi); rim width: 2.15)
• 1991 XTZ 660 — Front only (Factory pressure: 2.10 bar (30 psi); rim width: 2.15)
• 1987, 1989 XT600 — Front only (Factory pressure: 1.50 bar (22 psi); rim width: 2.15; Factory pressure: 2.10 bar (30 psi); rim width: 2.15)
• 1983, 1985, 1988 XT 600 Z — Front only (Factory pressure: 1.50 bar (22 psi); rim width: 2.15; Factory pressure: 1.80 bar (26 psi); rim width: 2.15; Factory pressure: 2.50 bar (36 psi); rim width: 2.15)
• 1986 XT 600 Z Tenere — Front only (Factory pressure: 1.50 bar (22 psi); rim width: 2.15)

ZERO

• 2015 ZERO FX — Front only (Factory pressure: 2.00 bar (29 psi); rim width: 2.15)

Factory fitment per the tire manufacturer's chart. Please confirm for your specific model and year.