MT
Cusco Japan Type Mz Spec F - 2 way (1&2way) Rear LSD - Subaru Impreza WRX STi - Impreza WRX Sti GRB (A-E) / GVB (C-E) (MT)
![Cusco Japan Type Mz Spec F - 2 way (1&2way) Rear LSD - Subaru Impreza WRX STi - Impreza WRX Sti GRB (A-E) / GVB (C-E) (MT) - GRB/GVB - LSD 182 AT2](http://rzcrewgarage.com/cdn/shop/products/Cusco_Type_MZ_spec_F_lad_0f1cf012-44c4-4766-a29a-0a0bb25d91c7_1024x.jpg?v=1710154854)
Cusco Japan Type Mz Spec F - 2 way (1&2way) Rear LSD - Subaru Impreza WRX STi - Impreza WRX Sti GRB (A-E) / GVB (C-E) (MT)
$976.50
Specifications:Manufacturer: Cusco JapanPart Number: LSD 182 AT2LSD Model: Type Mz Spec FLSD Type: 2 way (1&2way)Transmission Type: MTPosition: RearIMPORTANT: Read the fitting tab to ensure this part fits on your car!!The Spec-F LSD feature a special flat friction clutch plates which translates to a milder initial engagement when acceleratio...
Cusco Japan Type Mz Spec F - 2 way (1.5&2way) Rear LSD - Honda S2000 - AP1/AP2 (MT)
![Cusco Japan Type Mz Spec F - 2 way (1.5&2way) Rear LSD - Honda S2000 - AP1/AP2 (MT) - AP1/AP2 - LSD 380 KT2](http://rzcrewgarage.com/cdn/shop/products/Cusco_Type_MZ_spec_F_lad_6aebeb70-5cb6-4d87-9f63-1a7c3194adea_1024x.jpg?v=1710154996)
Cusco Japan Type Mz Spec F - 2 way (1.5&2way) Rear LSD - Honda S2000 - AP1/AP2 (MT)
$976.50
Specifications:Manufacturer: Cusco JapanPart Number: LSD 380 KT2LSD Model: Type Mz Spec FLSD Type: 2 way (1.5&2way)Transmission Type: MTPosition: RearIMPORTANT: Read the fitting tab to ensure this part fits on your car!!The Spec-F LSD feature a special flat friction clutch plates which translates to a milder initial engagement when accelerat...
Cusco Japan Type Mz Spec F - 2 way (1.5&2way) Rear LSD - Mazda MX-5 Miata Roadster - NC (MT,AT)
![Cusco Japan Type Mz Spec F - 2 way (1.5&2way) Rear LSD - Mazda MX-5 Miata Roadster - NC (MT,AT) - NC - LSD 428 KT2](http://rzcrewgarage.com/cdn/shop/products/Cusco_Type_MZ_spec_F_lad_f884c9a9-1098-4fe0-b486-a910924b2daf_1024x.jpg?v=1710155085)
Cusco Japan Type Mz Spec F - 2 way (1.5&2way) Rear LSD - Mazda MX-5 Miata Roadster - NC (MT,AT)
$976.50
Specifications:Manufacturer: Cusco JapanPart Number: LSD 428 KT2LSD Model: Type Mz Spec FLSD Type: 2 way (1.5&2way)Transmission Type: MT,ATPosition: RearIMPORTANT: Read the fitting tab to ensure this part fits on your car!!The Spec-F LSD feature a special flat friction clutch plates which translates to a milder initial engagement when accele...
Cusco Japan Type Mz Spec F - 2 way (1.5&2way) Rear LSD - Mazda RX-8 - SE3P (MT,AT)
![Cusco Japan Type Mz Spec F - 2 way (1.5&2way) Rear LSD - Mazda RX-8 - SE3P (MT,AT) - SE3P - LSD 165 KT2](http://rzcrewgarage.com/cdn/shop/products/Cusco_Type_MZ_spec_F_lad_b9c9d256-c271-47a2-a95a-b4b711eab88a_1024x.jpg?v=1710155020)
Cusco Japan Type Mz Spec F - 2 way (1.5&2way) Rear LSD - Mazda RX-8 - SE3P (MT,AT)
$1,057.90
Specifications:Manufacturer: Cusco JapanPart Number: LSD 165 KT2LSD Model: Type Mz Spec FLSD Type: 2 way (1.5&2way)Transmission Type: MT,ATPosition: RearIMPORTANT: Read the fitting tab to ensure this part fits on your car!!The Spec-F LSD feature a special flat friction clutch plates which translates to a milder initial engagement when accele...
Cusco Japan Type Mz Spec F - 2 way (1.5&2way) Rear LSD - Mitsubishi Lancer Evolution X - CZ4A (MT)
![Cusco Japan Type Mz Spec F - 2 way (1.5&2way) Rear LSD - Mitsubishi Lancer Evolution X - CZ4A (MT) - CZ4A - LSD 141 KT2](http://rzcrewgarage.com/cdn/shop/products/Cusco_Type_MZ_spec_F_lad_84643ffb-6de5-4267-8ba6-fef918e457ee_1024x.jpg?v=1710154337)
Cusco Japan Type Mz Spec F - 2 way (1.5&2way) Rear LSD - Mitsubishi Lancer Evolution X - CZ4A (MT)
$976.50
Specifications:Manufacturer: Cusco JapanPart Number: LSD 141 KT2LSD Model: Type Mz Spec FLSD Type: 2 way (1.5&2way)Transmission Type: MTPosition: RearIMPORTANT: Read the fitting tab to ensure this part fits on your car!!The Spec-F LSD feature a special flat friction clutch plates which translates to a milder initial engagement when accelerat...
Cusco Japan Type Mz Spec F - 2 way (1.5&2way) Rear LSD - Subaru Impreza WRX STi - Impreza WRX Sti GRB (A-E) / GVB (C-E) (MT)
![Cusco Japan Type Mz Spec F - 2 way (1.5&2way) Rear LSD - Subaru Impreza WRX STi - Impreza WRX Sti GRB (A-E) / GVB (C-E) (MT) - GRB/GVB - LSD 182 KT2](http://rzcrewgarage.com/cdn/shop/products/Cusco_Type_MZ_spec_F_lad_f0713e1d-1666-4b7b-8399-4958589ab6e1_1024x.jpg?v=1710154854)
Cusco Japan Type Mz Spec F - 2 way (1.5&2way) Rear LSD - Subaru Impreza WRX STi - Impreza WRX Sti GRB (A-E) / GVB (C-E) (MT)
$976.50
Specifications:Manufacturer: Cusco JapanPart Number: LSD 182 KT2LSD Model: Type Mz Spec FLSD Type: 2 way (1.5&2way)Transmission Type: MTPosition: RearIMPORTANT: Read the fitting tab to ensure this part fits on your car!!The Spec-F LSD feature a special flat friction clutch plates which translates to a milder initial engagement when accelerat...
Cusco Japan Type MZ Spec-F - 1 way (1&2way) Rear LSD - Nissan Fairlady Z - Z33/Z34 (MT)
![Cusco Japan Type MZ Spec-F - 1 way (1&2way) Rear LSD - Nissan Fairlady Z - Z33/Z34 (MT) - Z33/Z34 - LSD 251 ET](http://rzcrewgarage.com/cdn/shop/products/Cusco_Type_MZ_spec_F_lad_cfc59311-5596-47cd-838f-1576ebfa7dd1_1024x.jpg?v=1710154390)
Cusco Japan Type MZ Spec-F - 1 way (1&2way) Rear LSD - Nissan Fairlady Z - Z33/Z34 (MT)
$1,057.90
Specifications:Manufacturer: Cusco JapanPart Number: LSD 251 ETLSD Model: Type MZ Spec-FLSD Type: 1 way (1&2way) Transmission Type: MTPosition: RearIMPORTANT: Read the fitting tab to ensure this part fits on your car!!The Spec-F LSD feature a special flat friction clutch plates which translates to a milder initial engagement when accelerat...
Cusco Japan Type MZ Spec-F - 1.5 way (1.5&2way) Rear LSD - Nissan Fairlady Z - Z33/Z34 (MT)
![Cusco Japan Type MZ Spec-F - 1.5 way (1.5&2way) Rear LSD - Nissan Fairlady Z - Z33/Z34 (MT) - Z33/Z34 - LSD 251 KT15](http://rzcrewgarage.com/cdn/shop/products/Cusco_Type_MZ_spec_F_lad_1695abe7-7f7f-4163-bc05-92fbd4bd91cd_1024x.jpg?v=1710154392)
Cusco Japan Type MZ Spec-F - 1.5 way (1.5&2way) Rear LSD - Nissan Fairlady Z - Z33/Z34 (MT)
$1,057.90
Specifications:Manufacturer: Cusco JapanPart Number: LSD 251 KT15LSD Model: Type MZ Spec-FLSD Type: 1.5 way (1.5&2way) Transmission Type: MTPosition: RearIMPORTANT: Read the fitting tab to ensure this part fits on your car!!The Spec-F LSD feature a special flat friction clutch plates which translates to a milder initial engagement when acc...
Cusco Japan Type MZ Spec-F - 2 way (1&2way) Rear LSD - Nissan Fairlady Z - Z33/Z34 (MT)
![Cusco Japan Type MZ Spec-F - 2 way (1&2way) Rear LSD - Nissan Fairlady Z - Z33/Z34 (MT) - Z33/Z34 - LSD 251 ET2](http://rzcrewgarage.com/cdn/shop/products/Cusco_Type_MZ_spec_F_lad_d372eb76-5b91-421c-ba94-1efeab86d4e2_1024x.jpg?v=1710154390)
Cusco Japan Type MZ Spec-F - 2 way (1&2way) Rear LSD - Nissan Fairlady Z - Z33/Z34 (MT)
$1,057.90
Specifications:Manufacturer: Cusco JapanPart Number: LSD 251 ET2LSD Model: Type MZ Spec-FLSD Type: 2 way (1&2way)Transmission Type: MTPosition: RearIMPORTANT: Read the fitting tab to ensure this part fits on your car!!The Spec-F LSD feature a special flat friction clutch plates which translates to a milder initial engagement when acceleratio...
Cusco Japan Type MZ Spec-F - 2 way (1.5&2way) Rear LSD - Nissan Fairlady Z - Z33/Z34 (MT)
![Cusco Japan Type MZ Spec-F - 2 way (1.5&2way) Rear LSD - Nissan Fairlady Z - Z33/Z34 (MT) - Z33/Z34 - LSD 251 KT2](http://rzcrewgarage.com/cdn/shop/products/Cusco_Type_MZ_spec_F_lad_90d4258c-9948-4923-bd70-60eff97189ab_1024x.jpg?v=1710154392)
Cusco Japan Type MZ Spec-F - 2 way (1.5&2way) Rear LSD - Nissan Fairlady Z - Z33/Z34 (MT)
$1,280.00
Specifications:Manufacturer: Cusco JapanPart Number: LSD 251 KT2LSD Model: Type MZ Spec-FLSD Type: 2 way (1.5&2way)Transmission Type: MTPosition: RearIMPORTANT: Read the fitting tab to ensure this part fits on your car!!The Spec-F LSD feature a special flat friction clutch plates which translates to a milder initial engagement when accelerat...
![Cusco Japan Type Rs - 1 way (1&2way) Rear LSD - Honda S2000 - AP1/AP2 (MT) - AP1/AP2 - LSD 380 F](http://rzcrewgarage.com/cdn/shop/products/Cusco_LSD_type_RS_d494756e-f0c0-48a3-8338-c92520f2ec80_1024x.jpg?v=1710154981)
Cusco Japan Type Rs - 1 way (1&2way) Rear LSD - Honda S2000 - AP1/AP2 (MT)
$976.50
Specifications:Manufacturer: Cusco JapanPart Number: LSD 380 FLSD Model: Type RsLSD Type: 1 way (1&2way) Transmission Type: MTPosition: RearIMPORTANT: Read the fitting tab to ensure this part fits on your car!!The type RS LSD is perfect for low to mid power vehicule. With a lower amount of plates in its assembly, this lsd is highly reactive...
Cusco Japan Type Rs - 1 way (1&2way) Rear LSD - Mazda MX-5 Miata Roadster - NC (MT,AT)
![Cusco Japan Type Rs - 1 way (1&2way) Rear LSD - Mazda MX-5 Miata Roadster - NC (MT,AT) - NC - LSD 428 F](http://rzcrewgarage.com/cdn/shop/products/Cusco_LSD_type_RS_cde2be41-e8a1-4ede-b74b-f8f05ac7e022_1024x.jpg?v=1710155072)
Cusco Japan Type Rs - 1 way (1&2way) Rear LSD - Mazda MX-5 Miata Roadster - NC (MT,AT)
$976.50
Specifications:Manufacturer: Cusco JapanPart Number: LSD 428 FLSD Model: Type RsLSD Type: 1 way (1&2way) Transmission Type: MT,ATPosition: RearIMPORTANT: Read the fitting tab to ensure this part fits on your car!!The type RS LSD is perfect for low to mid power vehicule. With a lower amount of plates in its assembly, this lsd is highly react...
Cusco Japan Type Rs - 1 way (1&2way) Rear LSD - Mazda RX-8 - SE3P (MT,AT)
![Cusco Japan Type Rs - 1 way (1&2way) Rear LSD - Mazda RX-8 - SE3P (MT,AT) - SE3P - LSD 165 F](http://rzcrewgarage.com/cdn/shop/products/Cusco_LSD_type_RS_f683d03d-552a-450f-89d3-4ac34e899651_1024x.jpg?v=1710155011)
Cusco Japan Type Rs - 1 way (1&2way) Rear LSD - Mazda RX-8 - SE3P (MT,AT)
$1,057.90
Specifications:Manufacturer: Cusco JapanPart Number: LSD 165 FLSD Model: Type RsLSD Type: 1 way (1&2way) Transmission Type: MT,ATPosition: RearIMPORTANT: Read the fitting tab to ensure this part fits on your car!!The type RS LSD is perfect for low to mid power vehicule. With a lower amount of plates in its assembly, this lsd is highly react...
Cusco Japan Type Rs - 1 way (1&2way) Rear LSD - Nissan Fairlady Z - Z33/Z34 (MT)
![Cusco Japan Type Rs - 1 way (1&2way) Rear LSD - Nissan Fairlady Z - Z33/Z34 (MT) - Z33/Z34 - LSD 251 F](http://rzcrewgarage.com/cdn/shop/products/Cusco_LSD_type_RS_077a9199-bbdd-4b45-b0d1-15ad565e8c05_1024x.jpg?v=1710154374)
Cusco Japan Type Rs - 1 way (1&2way) Rear LSD - Nissan Fairlady Z - Z33/Z34 (MT)
$1,057.90
Specifications:Manufacturer: Cusco JapanPart Number: LSD 251 FLSD Model: Type RsLSD Type: 1 way (1&2way) Transmission Type: MTPosition: RearIMPORTANT: Read the fitting tab to ensure this part fits on your car!!The type RS LSD is perfect for low to mid power vehicule. With a lower amount of plates in its assembly, this lsd is highly reactive...
Cusco Japan Type Rs - 1 way (1&2way) Rear LSD - Subaru Impreza WRX STi - Impreza WRX Sti GRB (A-E) / GVB (C-E) (MT)
![Cusco Japan Type Rs - 1 way (1&2way) Rear LSD - Subaru Impreza WRX STi - Impreza WRX Sti GRB (A-E) / GVB (C-E) (MT) - GRB/GVB - LSD 182 F](http://rzcrewgarage.com/cdn/shop/products/Cusco_LSD_type_RS_373a7d2a-f93f-4b18-b350-f13b60939eb6_1024x.jpg?v=1710154836)
Cusco Japan Type Rs - 1 way (1&2way) Rear LSD - Subaru Impreza WRX STi - Impreza WRX Sti GRB (A-E) / GVB (C-E) (MT)
$976.50
Specifications:Manufacturer: Cusco JapanPart Number: LSD 182 FLSD Model: Type RsLSD Type: 1 way (1&2way) Transmission Type: MTPosition: RearIMPORTANT: Read the fitting tab to ensure this part fits on your car!!The type RS LSD is perfect for low to mid power vehicule. With a lower amount of plates in its assembly, this lsd is highly reactive...
Cusco Japan Type Rs - 1 way (1&2way) Rear LSD - Mitsubishi Lancer Evolution X - CZ4A (MT)
![Cusco Japan Type Rs - 1 way (1&2way) Rear LSD - Mitsubishi Lancer Evolution X - CZ4A (MT) - CZ4A - LSD 141 F](http://rzcrewgarage.com/cdn/shop/products/Cusco_LSD_type_RS_72ddb4ca-9861-44e1-9a97-082626385a53_1024x.jpg?v=1710154305)
Cusco Japan Type Rs - 1 way (1&2way) Rear LSD - Mitsubishi Lancer Evolution X - CZ4A (MT)
$976.50
Specifications:Manufacturer: Cusco JapanPart Number: LSD 141 FLSD Model: Type RsLSD Type: 1 way (1&2way)Transmission Type: MTPosition: RearIMPORTANT: Read the fitting tab to ensure this part fits on your car!!The type RS LSD is perfect for low to mid power vehicule. With a lower amount of plates in its assembly, this lsd is highly reactive a...
Cusco Japan Type Rs - 1 way (1&2way) Rear LSD - Mitsubishi Lancer Evolution X - CZ4A (MT)
![Cusco Japan Type Rs - 1 way (1&2way) Rear LSD - Mitsubishi Lancer Evolution X - CZ4A (MT) - CZ4A - LSD 452 F](http://rzcrewgarage.com/cdn/shop/products/Cusco_LSD_type_RS_6c5f1f10-da4e-4ad6-a51d-c9e2f7b49dac_1024x.jpg?v=1710154314)
Cusco Japan Type Rs - 1 way (1&2way) Rear LSD - Mitsubishi Lancer Evolution X - CZ4A (MT)
$976.50
Specifications:Manufacturer: Cusco JapanPart Number: LSD 452 FLSD Model: Type RsLSD Type: 1 way (1&2way)Transmission Type: MTPosition: RearIMPORTANT: Read the fitting tab to ensure this part fits on your car!!The type RS LSD is perfect for low to mid power vehicule. With a lower amount of plates in its assembly, this lsd is highly reactive a...
![Cusco Japan Type RS - 1 way Front LSD - Toyota Corolla Axio - NZE141 (MT) - NZE141 - LSD 111 F](http://rzcrewgarage.com/cdn/shop/products/cusco-japan-type-rs-1-way-front-lsd-toyota-corolla-axio-nze141-mt-rzcrew_1024x.jpg?v=1710319876)
Cusco Japan Type RS - 1 way Front LSD - Toyota Corolla Axio - NZE141 (MT)
$980.10
Specifications:Manufacturer: Cusco JapanPart Number: LSD 111 FLSD Model: Type RSLSD Type: 1 wayTransmission Type: MTPosition: FrontIMPORTANT: The type RS LSD is perfect for low to mid power vehicule. With a lower amount of plates in its assembly, this lsd is highly reactive and ensure low resistance resulting in better clutch response, pedal fee...
Cusco Japan Type RS - 1 way Front LSD - Toyota Vitz - NCP91 (MT)
![Cusco Japan Type RS - 1 way Front LSD - Toyota Vitz - NCP91 (MT) - NCP91 - LSD 111 F](http://rzcrewgarage.com/cdn/shop/products/cusco-japan-type-rs-1-way-front-lsd-toyota-vitz-ncp91-mt-rzcrew_1024x.jpg?v=1710319878)
Cusco Japan Type RS - 1 way Front LSD - Toyota Vitz - NCP91 (MT)
$980.10
Specifications:Manufacturer: Cusco JapanPart Number: LSD 111 FLSD Model: Type RSLSD Type: 1 wayTransmission Type: MTPosition: FrontIMPORTANT: ONLY for NCP91s 2/05-10/11The type RS LSD is perfect for low to mid power vehicule. With a lower amount of plates in its assembly, this lsd is highly reactive and ensure low resistance resulting in better ...
Cusco Japan Type Rs - 1 way(1 & 1.5way) Front LSD - Honda Accord Euro R - CL7 (MT)
![Cusco Japan Type Rs - 1 way(1 & 1.5way) Front LSD - Honda Accord Euro R - CL7 (MT) - CL7 - LSD 331 C](http://rzcrewgarage.com/cdn/shop/products/Cusco_LSD_type_RS_61f71989-96c3-4f25-89bc-e8aa664234b8_1024x.jpg?v=1710154894)
Cusco Japan Type Rs - 1 way(1 & 1.5way) Front LSD - Honda Accord Euro R - CL7 (MT)
$878.90
Specifications:Manufacturer: Cusco JapanPart Number: LSD 331 CLSD Model: Type RsLSD Type: 1 way(1 & 1.5way) Transmission Type: MTPosition: FrontIMPORTANT: Read the fitting tab to ensure this part fits on your car!!The type RS LSD is perfect for low to mid power vehicule. With a lower amount of plates in its assembly, this lsd is highly reac...
![Cusco Japan Type Rs - 1 way(1 & 1.5way) Front LSD - Honda Fit-Jazz - GE8 (MT) - GE8 - LSD 386 C](http://rzcrewgarage.com/cdn/shop/products/Cusco_LSD_type_RS_d1170099-9a9d-47b2-91d5-c057a2ebe288_1024x.jpg?v=1710154975)
Cusco Japan Type Rs - 1 way(1 & 1.5way) Front LSD - Honda Fit-Jazz - GE8 (MT)
$895.10
Specifications:Manufacturer: Cusco JapanPart Number: LSD 386 CLSD Model: Type RsLSD Type: 1 way(1 & 1.5way) Transmission Type: MTPosition: FrontIMPORTANT: Read the fitting tab to ensure this part fits on your car!!The type RS LSD is perfect for low to mid power vehicule. With a lower amount of plates in its assembly, this lsd is highly reac...
![Cusco Japan Type Rs - 1 way(1 & 1.5way) Front LSD - Mazda 2 Demio - DE5FS (MT) - DE5FS - LSD 438 C](http://rzcrewgarage.com/cdn/shop/products/Cusco_LSD_type_RS_d5de2bd7-5708-4140-b1bd-90ef5e940bb6_1024x.jpg?v=1710155050)
Cusco Japan Type Rs - 1 way(1 & 1.5way) Front LSD - Mazda 2 Demio - DE5FS (MT)
$976.50
Specifications:Manufacturer: Cusco JapanPart Number: LSD 438 CLSD Model: Type RsLSD Type: 1 way(1 & 1.5way) Transmission Type: MTPosition: FrontIMPORTANT: Read the fitting tab to ensure this part fits on your car!!The type RS LSD is perfect for low to mid power vehicule. With a lower amount of plates in its assembly, this lsd is highly reac...
Cusco Japan Type Rs - 1 way(1 & 1.5way) Front LSD - Subaru Impreza WRX STi - Impreza WRX Sti GRB (A-E) / GVB (C-E) (MT)
![Cusco Japan Type Rs - 1 way(1 & 1.5way) Front LSD - Subaru Impreza WRX STi - Impreza WRX Sti GRB (A-E) / GVB (C-E) (MT) - GRB/GVB - LSD 184 C](http://rzcrewgarage.com/cdn/shop/products/Cusco_LSD_type_RS_f8ddf57f-0009-4270-b189-5344b8beca6e_1024x.jpg?v=1710154836)
Cusco Japan Type Rs - 1 way(1 & 1.5way) Front LSD - Subaru Impreza WRX STi - Impreza WRX Sti GRB (A-E) / GVB (C-E) (MT)
$976.50
Specifications:Manufacturer: Cusco JapanPart Number: LSD 184 CLSD Model: Type RsLSD Type: 1 way(1 & 1.5way) Transmission Type: MTPosition: FrontIMPORTANT: Read the fitting tab to ensure this part fits on your car!!The type RS LSD is perfect for low to mid power vehicule. With a lower amount of plates in its assembly, this lsd is highly reac...
Cusco Japan Type Rs - 1 way(1 & 1.5way) Front LSD - Suzuki Swift Sport - ZC31S (MT)
![Cusco Japan Type Rs - 1 way(1 & 1.5way) Front LSD - Suzuki Swift Sport - ZC31S (MT) - ZC31S - LSD 617 C](http://rzcrewgarage.com/cdn/shop/products/Cusco_LSD_type_RS_3ca62eda-d874-4b8d-ba3c-ab4e0b5bfb3e_1024x.jpg?v=1710154872)
Cusco Japan Type Rs - 1 way(1 & 1.5way) Front LSD - Suzuki Swift Sport - ZC31S (MT)
$895.10
Specifications:Manufacturer: Cusco JapanPart Number: LSD 617 CLSD Model: Type RsLSD Type: 1 way(1 & 1.5way) Transmission Type: MTPosition: FrontIMPORTANT: Read the fitting tab to ensure this part fits on your car!!The type RS LSD is perfect for low to mid power vehicule. With a lower amount of plates in its assembly, this lsd is highly reac...